Former presidential candidate Dmitry Uss (L) hugs with Alexander Kozulin, one of the opposition presidential candidates in 2006, near a court building in Minsk, May 20, 2011. Kozulin, who spent more than two years in prison after presidential elections in Belarus in 2006, arrived to support Uss before a court hearing. Uss is on trial over the protests in Minsk that followed President Alexander Lukashenko's re-election last December, which was criticised by Western observers as fraudulent. REUTERS/Vasily Fedosenko (BELARUS - Tags: POLITICS CRIME LAW CIVIL UNREST) 

European foreign policy chief Javier Solana (L) shakes hands with Alexander Kozulin, one of the country's opposition leaders, in Minsk February 19, 2009. Solana paid his first visit to Belarus which has moved to improve ties with the West after years of accusations of human rights abuses, an EU official said. REUTERS/Vasily Fedosenko (BELARUS) 

Belarussian opposition leader Alexander Kozulin casts his ballot at a polling station in Minsk September 28, 2008. Belarussians were voting for a new parliament on Sunday in an election President Alexander Lukashenko hopes will improve his ex-Soviet state's strained relations with the West, particularly the European Union. REUTERS/Yulia Darashkevich (BELARUS) 

Belarussian opposition leader Alexander Kozulin speaks to a Reuters reporter in Minsk August 18, 2008. Jailed Belarussian opposition leader Alexander Kozulin, considered in the West to be the ex-Soviet state's most prominent political prisoner, was released August 16, 2008, his daughter said. REUTERS/Vladimir Nikolsky (BELARUS) 

People hold portraits of imprisoned opposition leader Alexander Kozulin and other jailed activists in Minsk March 30, 2008. Several dozens people gathered on Sunday in the centre of Minsk to show solidarity with jailed political activists, the organisers said. REUTERS/Vasily Fedosenko (BELARUS) 

Opposition activist Alexander Kozulin reacts at the coffin of his wife, who died of cancer, in Minsk February 27, 2008. Jailed Belarussian opposition activist Kozulin was released on compassion leave Thursday to attend his wife's funeral. Kozulin, jailed for 5-1/2 years for helping to stage rallies denouncing Lukashenko's re-election in 2006, was allowed home for three days. REUTERS/Yulia Darashkevich (BELARUS) 

Opposition activist Alexander Kozulin (C) pays his last respects at the coffin of his wife as his daughter (2nd R) reacts in a church in Minsk February 26, 2008. Kozulin, described by the West as a political prisoner, said President Alexander Lukashenko had given in to pressure from the European Union and the United States by releasing him on a three-day compassionate leave for the funeral of his wife in a bid to improve relations. REUTERS/Vladimir Nikolsky (BELARUS) 

Opposition activist Alexander Kozulin speaks to reporters after being released on a three day compassionate leave to attend the funeral of his wife in Minsk February 26, 2008. Kozulin, described by the West as a political prisoner, said President Alexander Lukashenko had given in to pressure from the European Union and United States in a bid to improve relations. REUTERS/Yulia Darashkevich (BELARUS) 

Opposition activist Alexander Kozulin (C) reacts as he meets his mother Eugenia (L) and father Vladislav after being released on a three day compassionate leave to attend the funeral of his wife in Minsk February 26, 2008. Kozulin, described by the West as a political prisoner, said President Alexander Lukashenko had given in to pressure from the European Union and United States in a bid to improve relations. REUTERS/Yulia Darashkevich (BELARUS) 

Opposition activist Alexander Kozulin (L) greets his mother Eugenia after being released on a three day compassionate leave to attend the funeral of his wife in Minsk February 26, 2008. Kozulin, described by the West as a political prisoner, said President Alexander Lukashenko had given in to pressure from the European Union and United States in a bid to improve relations. REUTERS/Yulia Darashkevich (BELARUS) 

Daughters of Belarus' most prominent detainee Alexander Kozulin, Olga (R) and Yulia, stand with portraits of their mother in central Minsk February 25, 2008. Kozulin's wife Irina, 48, died of cancer on Saturday. Kozulin threatened on Monday to step up a hunger strike by refusing liquids unless authorities granted him permission to attend his wife's funeral. About 400 people carrying candles and portraits of Kozulin and his wife gathered on Monday evening in central October Square to press for Kozulin's release from jail to attend the funeral. REUTERS/Yulia Darashkevich (BELARUS) 

People hold portraits of Irina Kozulina, the wife of Belarus' most prominent detainee Alexander Kozulin, during a rally in central Minsk February 25, 2008. Kozulin's wife Irina, 48, died of cancer on Saturday. Kozulin threatened on Monday to step up a hunger strike by refusing liquids unless authorities granted him permission to attend his wife's funeral. About 400 people carrying candles and portraits of Kozulin and his wife gathered on Monday evening in central October Square to press for Kozulin's release from jail to attend the funeral. REUTERS/Vladimir Nikolsky (BELARUS) 

Irina Kozulina, the wife of Belarus's most prominent detainee, Alexander Kozulin, poses for a picture in this file photo taken in 2006 in Minsk. Irina, 48, died of cancer on February 23, 2008. Alexander Kozulin, whose release is demanded by Western countries, launched a hunger strike on February 24, 2008, to secure permission to attend his wife's funeral. REUTERS/Yulia Darashkevich (BELARUS) 

Riot police lead away Olga Kozulina, the daughter of imprisoned opposition activist Alexander Kozulin, during an opposition protest in the centre of Minsk February 18, 2008. REUTERS/Vasily Fedosenko (BELARUS) 

Riot police detain Olga Kozulina, the daughter of imprisoned opposition activist Alexander Kozulin, during a protest in the center of Minsk February 18, 2008. REUTERS/Vasily Fedosenko (BELARUS) 

Men hold portraits of jailed former presidential candidate Alexander Kozulin after a rally in Minsk December 10, 2007. REUTERS/Vasily Fedosenko (BELARUS) 

Belarussian opposition supporters hold portraits of Alexander Kozulin (R) and Artur Finkevich during a protest in central Minsk, November 16, 2007. Kozulin unsuccessfully challenged President Alexander Lukashenko in an election and is now serving a 5 and a half year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

A Belarussian opposition supporter holds a portrait of Alexander Kozulin during a protest in central Minsk, November 16, 2007. Kozulin unsuccessfully challenged President Alexander Lukashenko in an election and is now serving a 5 and a half year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

A girl holds a portrait of imprisoned opposition leader Alexander Kozulin during rally in central Minsk, February 14, 2007. REUTERS/Vasily Fedosenko (RUSSIA) 

Police detain the leader of the opposition United Civil Party Anatoly Lebedko during a demonstration in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Alexander Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

A protester helps a fellow protester get up after police ran him over during a demonstration in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Alexander Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

A police officer detains a protester during a demonstration in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Alexander Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

Police disperse protesters during a demonstration in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Alexander Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

Protesters hold portraits of opposition activist Alexander Kozulin as police attempt to disperse the demonstrators in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

Protesters hold portraits of opposition activist Alexander Kozulin as police attempt to disperse the demonstrators in Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

A Belarussian protester holds a portrait of opposition activist Alexander Kozulin in central Minsk December 10, 2006. Police in Belarus on Sunday detained about 20 opposition supporters who staged a rare protest in the capital of the tightly-controlled ex-Soviet state, said a Reuters reporter at the scene. The protest was in support of Kozulin, who unsuccessfully challenged President Alexander Lukashenko in an election in March and is now serving a 5-1/2-year prison term for organising banned demonstrations. REUTERS/Vasily Fedosenko (BELARUS) 

- FILE PHOTO TAKEN 17FEB06 - Former presidential candidate Alexander Kozulin is seen in Minsk in this February 17, 2006 file photograph. [A prosecutor in Belarus demanded on July 13, 2006, six years in jail for Kozulin, who challenged President Alexander Lukashenko's bid for re-election and helped stage protests against his landslide victory. Picture taken February 17, 2006.] 

Opposition presidential candidates Alexander Milinkevich (L) and Alexander Kozulin arrive for the joint meeting with supporters in Minsk, March 17, 2006. [Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election.] 

Opposition presidential candidates Alexander Milinkevich (L) and Alexander Kozulin greet their supporters in Minsk, March 17, 2006. Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election. REUTERS/Vasily Fedosenko 

Opposition presidential candidates Alexander Milinkevich (R) and Alexander Kozulin greet their supporters in Minsk, March 17, 2006. Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election. REUTERS/Vasily Fedosenko 

Opposition presidential candidate Alexander Kozulin lifts up his grandson Vladislav as he arrives for the meeting with supporters in Minsk, March 17, 2006. Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election. REUTERS/Gleb Garanich 

Opposition presidential candidates Alexander Milinkevich (L) and Alexander Kozulin arrive for the joint meeting with supporters in Minsk, March 17, 2006. Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election. REUTERS/Grigory Dukor 

Opposition presidential candidates Alexander Milinkevich (L) and Alexander Kozulin arrive for the joint meeting with supporters in Minsk, March 17, 2006. Belarussian President Alexander Lukashenko said on Friday he would "wring the necks" of rivals who violate law and order as the opposition geared up for a last, unauthorised rally before a weekend election. REUTERS/Grigory Dukor 

Belarussian opposition candidate for this week's presidential election Alexander Kozulin holds a newspaper during a news conference in Moscow March 13, 2006. Kozulin, a former rector of the Belarussian State University, is one of four candidates in the March 19 presidential election. The pictures in the paper show plainclothes police officers beating Kozulin on March 2. President Alexander Lukashenko, in power since 1994 and accused in the West of crushing human rights, is heavily favoured to win a new term against his three challengers. REUTERS/Alexander Natruskin 

Belarussian opposition candidate for this week's presidential election Alexander Kozulin speaks during a news conference in Moscow March 13, 2006. Kozulin, a former rector of the Belarussian State University, is one of four candidates in the March 19 presidential election. President Alexander Lukashenko, in power since 1994 and accused in the West of crushing human rights, is heavily favoured to win a new term against his three challengers. REUTERS/Alexander Natruskin 

A Belarussian supporter holds a poster with a portrait of opposition presidential candidate Alexander Milinkevich reading 'New President' during a rally in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

Leader of opposition party 'Belarussian people's front' Vintsuk Viachorka speaks to supporters of opposition presidential candidate Alexander Milinkevich in Minsk, March 8, 2006. Prosecutors in Belarus on Friday opened a criminal case against an opposition candidate Alexander Kozulin for breaking a portrait of President Alexander Lukashenko, whom he will challenge in a presidential election this month. REUTERS/Vasily Fedosenko 

Opposition presidential candidate Alexander Milinkevich speaks to supporters in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

Opposition presidential candidate Alexander Milinkevich signs posters with his portrait after a rally of his supporters in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

A Belarussian supporter holds a poster with a portrait of opposition presidential candidate Alexander Milinkevich reading 'New President' during a rally in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

Belarus supporters hold up posters with a portrait of opposition presidential candidate Alexander Milinkevich with words reading 'New President' during a rally in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

Opposition presidential candidate Alexander Milinkevich (L) speaks to supporters in Minsk, March 8, 2006. Belarus's small and divided opposition has tried to unite behind a single opposition figure but after months of talks some forces decided to back Alexander Kozulin, while the main opposition groups chose to support Milinkevich. REUTERS/Vasily Fedosenko 

Opposition presidential candidate Alexander Milinkevich gestures speaking to his supporters in the Belarussian town of Grodno 270 km (167.7 miles) west of the capital Minsk, March 4, 2006. Belarus President Alexander Lukashenko defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. REUTERS/Yulia Darashkevich 

Presidential candidate Alexander Kozulin (L) clashes with police in Minsk March 2, 2006. Belarussian security forces on Thursday beat and detained an opposition candidate who is challenging President Alexander Lukashenko's bid for re-election later this month. REUTERS/Vasily Fedosenko 

Belarussian riot police run across a street during a rally in support of opposition presidential candidate Alexander Milinkevich, central Minsk, March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Stringer 

A demonstrator holds a poster of opposition presidential candidate Alexander Milinkevich during a rally in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

A demonstrator holds a poster of opposition presidential candidate Alexander Milinkevich during a rally in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Belarussian opposition presidential candidate Alexander Milinkevich gestures as he speaks through a megaphone during a rally in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Belarussian opposition presidential candidate Alexander Milinkevich gestures during a rally in central Minsk, March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Belarussian riot police block a road during a rally supporting opposition presidential candidate Alexander Milinkevich in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Demonstrators gesture and shout during a rally supporting opposition presidential candidate Alexander Milinkevich in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Belarussian riot police block a road during a rally supporting opposition presidential candidate Alexander Milinkevich in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Belarussian opposition presidential candidate Alexander Milinkevich (R) gestures as he stands next to his wife Inna during a rally in central Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus's affairs, while opposition rival for the presidency Alexander Kozulin was beaten by security forces and detained for several hours. Kozulin was released as Milinkevich held an illegal rally in the city with some 3, 000 supporters. REUTERS/Vasily Fedosenko 

Presidential candidate Alexander Kozulin (L) clashes with police in Minsk March 2, 2006. President Alexander Lukashenko on Thursday defiantly told Western critics to stay out of Belarus' affairs, while opposition rival Kozulin was beaten by security forces and detained for several hours. REUTERS/Vasily Fedosenko 

Presidential candidate Alexander Kozulin clashes with police in Minsk March 2, 2006. Belarussian security forces on Thursday beat and detained an opposition candidate who is challenging President Alexander Lukashenko's bid for re-election later this month. REUTERS/Vasily Fedosenko 

Opposition candidate Alexander Kozulin looks on after he was officially registered for the presidential elections in Minsk, February 17, 2006. [Three candidates will challenge a bid by President Alexander Lukashenko to win a new term in Belarus' presidential election next month, the Central Election Commission said on Friday.] 

Opposition candidate Alexander Kozulin looks on after he was officially registered for the presidential elections in Minsk, February 17, 2006. Three candidates will challenge a bid by President Alexander Lukashenko to win a new term in Belarus' presidential election next month, the Central Election Commission said on Friday. REUTERS/Vasily Fedosenko 

Opposition candidate Alexander Kozulin gestures as he speaks in his office in Minsk February 16, 2006. Three candidates will challenge a bid by President Alexander Lukashenko to win a new term in Belarus' presidential election next month, the Central Election Commission said on Friday. Picture taken February 16, 2006. REUTERS/Vasily Fedosenko 

Opposition candidate Alexander Kozulin looks on after he was officially registered for the presidential elections in Minsk, February 17, 2006. Three candidates will challenge a bid by President Alexander Lukashenko to win a new term in Belarus' presidential election next month, the Central Election Commission said on Friday. REUTERS/Vasily Fedosenko 

Opposition candidate Alexander Kozulin gestures as he speaks in his office in Minsk February 16, 2006. Three candidates will challenge a bid by President Alexander Lukashenko to win a new term in Belarus' presidential election next month, the Central Election Commission said on Friday. Picture taken February 16, 2006. REUTERS/Vasily Fedosenko