Members of the Syrian regime inspect the location where a car bomb exploded in the northeastern Syrian town of Qamishli which is mainly controlled by Kurdish forces, Syria October 23, 2019. REUTERS/Muhammad Hamed

Members of the Syrian regime inspect the location where a car bomb exploded in the northeastern Syrian town of Qamishli which is mainly controlled by Kurdish forces, Syria October 23, 2019. REUTERS/Muhammad Hamed

Members of the Syrian regime inspect the location where a car bomb exploded in the northeastern Syrian town of Qamishli which is mainly controlled by Kurdish forces, Syria October 23, 2019. REUTERS/Muhammad Hamed

Members of the Syrian regime inspect the location where a car bomb exploded in the northeastern Syrian town of Qamishli which is mainly controlled by Kurdish forces, in the town of Qamishli, Syria October 23, 2019. REUTERS/Muhammad Hamed

Kurdish policemen stand guard at the location where a car bomb exploded in the northeastern Syrian town of Qamishli, which is mainly controlled by Kurdish forces, Syria October 23, 2019. REUTERS/Muhammad Hamed

Members of the Syrian regime inspect the location of a car bomb that exploded in the northeastern Syrian town of Qamishli, which is mainly controlled by Kurdish forces, in the town of Qamishli, Syria October 23, 2019. REUTERS/Muhammad Hamed

Members of the Syrian regime inspect the location of a car bomb that exploded in the northeastern Syrian town of Qamishli which is mainly controlled by Kurdish forces, in the town of Qamishli, Syria October 23, 2019. REUTERS/Muhammad Hamed

An armed police officer of the Malta Police Special Intervention Unit provides security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers of the Malta Police Special Intervention Unit provide security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers of the Malta Police Special Intervention Unit provide security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

An armed police officer of the Malta Police Special Intervention Unit provides security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Former Maltese Prime Minister Karmenu Mifsud Bonnici (R) walks by as an armed police officer of the Malta Police Special Intervention Unit provides security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers of the Malta Police Special Intervention Unit provide security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, are taken away from the Courts of Justice after the continuation of the compilation of evidence in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

An armed police officer of the Malta Police Special Intervention Unit provides security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, attend the continuation of the compilation of evidence at the Courts of Justice in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers of the Malta Police Special Intervention Unit provide security whilst three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia, are taken away from the Courts of Justice after the continuation of the compilation of evidence in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

A van carrying three men accused for the assassination of anti-corruption journalist Daphne Caruana Galizia, leaves the Courts of Justice after the continuation of the compilation of evidence in Valletta, Malta April 12, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, March 26, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, March 26, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, March 26, 2018. REUTERS/Darrin Zammit Lupi

Valletta 2018 European Capital of Culture Foundation chairman Jason Micallef (in red shirt and jacket), who has repeatedly called for the clearing away of the makeshift memorial (rear) to assassinated anti-corruption journalist Daphne Caruana Galizia, speaks to the media during the press launch of the sound installation "Who By Fire" by Scottish artist and 2010 Turner Prize winner Susan Philipsz, under the gaze of anti-corruption activists in Valletta, Malta March 24, 2018. REUTERS/Darrin Zammit Lupi

A woman looks at the makeshift memorial at the Great Siege monument to assassinated anti-corruption journalist Daphne Caruana Galizia, which has been destroyed and set up again several times, in Valletta, Malta March 24, 2018. REUTERS/Darrin Zammit Lupi

Scottish artist and 2010 Turner Prize winner Susan Philipsz places a candle at a makeshift memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb last October, in Valletta, Malta, March 24, 2018. Philipsz was urged to do so by activists before the press launch of her sound installation "Who By Fire" in the 16th century water cisterns beneath the square as part of the Valletta 2018 European Capital of Culture events, whose chairman Jason Micallef has repeatedly called for the clearing away of the memorial. REUTERS/Darrin Zammit Lupi

Valletta 2018 European Capital of Culture Foundation chairman Jason Micallef (R), who has repeatedly called for the clearing away of the makeshift memorial (rear) to assassinated anti-corruption journalist Daphne Caruana Galizia, speaks to the media during the press launch of the sound installation "Who By Fire" by Scottish artist and 2010 Turner Prize winner Susan Philipsz (L), under the gaze of anti-corruption activists in Valletta, Malta March 24, 2018. REUTERS/Darrin Zammit Lupi

A woman places flowers on the makeshift memorial to assassinated anti-corruption journalist Daphne Caruana Galizia, which has been destroyed and set up again several times, in Valletta, Malta March 24, 2018. REUTERS/Darrin Zammit Lupi

Anti-corruption activists look on as Valletta 2018 European Capital of Culture Foundation chairman Jason Micallef (not pictured), who has repeatedly called for the clearing away of the makeshift memorial (rear) to assassinated anti-corruption journalist Daphne Caruana Galizia, speaks to the media during the press launch of the sound installation "Who By Fire" by Scottish artist and 2010 Turner Prize winner Susan Philipsz in Valletta, Malta, March 24, 2018. REUTERS/Darrin Zammit Lupi

A man places flowers at the newly restored makeshift memorial to the assassinated anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, after unknown persons cleared away flowers, candles, photos and posters overnight, in Valletta, Malta, March 20, 2018. Activists and members of the public responded by recreating the memorial within hours. REUTERS/Darrin Zammit Lupi

The remains of a makeshift memorial to the assassinated anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, are seen after unknown persons cleared away flowers, candles, photos and posters overnight, in Valletta, Malta, March 20, 2018. Activists and members of the public responded by recreating the memorial within hours. REUTERS/Darrin Zammit Lupi

A man looks at a makeshift memorial for assassinated Maltese journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. The makeshift memorial also has a picture of murdered Slovak journalist Jan Kuciak and his fiancee Martina Kusnirov. REUTERS/Darrin Zammit Lupi TPX IMAGES OF THE DAY

A man looks at a makeshift memorial for assassinated Maltese journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. The makeshift memorial also has a picture of murdered Slovak journalist Jan Kuciak and his fiancee Martina Kusnirov. REUTERS/Darrin Zammit Lupi

A banner referring to the assassination of anti-corruption journalist Daphne Caruana Galizia who was killed by a car bomb five months ago, is seen on a highway in Birkirkara, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

Photos of assassinated Maltese journalist Daphne Caruana Galizia (top) and Slovak journalist Jan Kuciak and his fiancee Martina Kusnirova are seen on a makeshift memorial to Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

People place candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

A woman places a candle at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

People place candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb five months ago, in Valletta, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

A banner referring to the assassination of anti-corruption journalist Daphne Caruana Galizia who was killed by a car bomb five months ago, is seen on a highway in Birkirkara, Malta March 16, 2018. REUTERS/Darrin Zammit Lupi

Protesters stand near billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Protesters carry posters at a demonstration during which pressure group Occupy Justice placed billboards calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to OccupyJustice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Protesters stand near billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

People walk past banners and billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justicem, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Protesters stand near billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Protesters stand near billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Protesters stand near billboards placed by the pressure group Occupy Justice calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Activists from the pressure group Occupy Justice place billboards calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

Activists from the pressure group Occupy Justice place billboards calling for justice after the assassination of anti-corruption journalist Daphne Caruana Galizia, killed by a car bomb four months ago, outside the Auberge de Castille, the office of Prime Minister Joseph Muscat. The activists carried out the action after roadside billboards with the same messages were removed by the police, according to Occupy Justice, in Valletta, Malta February 18, 2018. REUTERS/Darrin Zammit Lupi

A woman holds a photo of anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, at a memorial in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi TPX IMAGES OF THE DAY

A woman holds a photo of anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, at a memorial outside the Courts of Justice in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

A woman holds a photo of anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, at a memorial in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

People hold up photos of assassinated anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, at a memorial outside the Courts of Justice in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

A woman holds candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

Plants, candles and messages are seen at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

Children light candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

People place flowers and candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

People place flowers and candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

A child places a candle at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

A woman places a candle at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

People place candles at a memorial for anti-corruption journalist Daphne Caruana Galizia, who was killed by a car bomb four months ago, in Valletta, Malta, February 16, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, February 7, 2018. REUTERS/Darrin Zammit Lupi

A woman walks by as armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, February 7, 2018. REUTERS/Darrin Zammit Lupi

Armed police officers provide security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, February 7, 2018. REUTERS/Darrin Zammit Lupi

An armed police officer provides security after three men, accused of the assassination of anti-corruption journalist Daphne Caruana Galizia last year, arrived at the Courts of Justice for the continuation of the compilation of evidence, in Valletta, Malta, February 7, 2018. REUTERS/Darrin Zammit Lupi