Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey (L) shakes hands with Burundi's President Pierre Nkurunziza during an official visit at the government's guesthouse Lohn in the village of Kehrsatz near the Swiss capital of Bern October 25, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey (L) and Burundi's President Pierre Nkurunziza inspect a guard of honour during an official visit at the government's guesthouse Lohn in the village of Kehrsatz near the Swiss capital of Bern October 25, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey (L) and Burundi's President Pierre Nkurunziza inspect a guard of honour during an official visit at the government's guesthouse Lohn in the village of Kehrsatz near the Swiss capital of Bern October 25, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey (L) and Burundi's President Pierre Nkurunziza inspect a guard of honour during an official visit at the government's guesthouse Lohn in the village of Kehrsatz near the Swiss capital of Bern October 25, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey (R ) talks to residents after the weekly meeting of the Federal Council in Basel October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Members of the Swiss Federal Council listen to a speech of Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey during a meeting with citizens of Basel in the Theater Basel after the weekly meeting of the Federal Council, in Basel October 19, 2011. The pictures shows: (bottom L to R) Swiss Defence Minister Ueli Maurer, Swiss Finance Minister Eveline Widmer-Schlumpf, Swiss Interior Minister Didier Burkhalter, Swiss Economy Minister Johann Schneider-Ammann,Swiss Minister of Justice and Police Simonetta Sommaruga and Swiss Minister of Environment, Transport, Energy and Communications Doris Leuthard. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Minister of Foreign Affairs Micheline Calmy-Rey delivers a speech during a meeting with residents after the weekly meeting of the Federal Council in Basel October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS HEADSHOT) 

United Nations Secretary General Ban Ki-Moon (C) shakes hands with Swiss President and Foreign Minister Micheline Calmy-Rey during a news conference after an official visit in Bern October 17, 2011. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) speaks next to Swiss President and Foreign Minister Micheline Calmy-Rey during a news conference after an official visit in Bern October 17, 2011. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) speaks next to Swiss President and Foreign Minister Micheline Calmy-Rey during a news conference after an official visit in Bern October 17, 2011. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) attends a news conference next to Swiss President and Foreign Minister Micheline Calmy-Rey during after an official visit in Bern October 17, 2011. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) delivers a speech during the opening ceremony of the 125th Assembly of the Inter-Parliamentary Union (IPU), in Bern October 16, 2011. The picture shows: (L to R) Mayor of the city of Bern Alexander Tschaeppaet, President of the Swiss Council of State Hansheiri Inderkum, President of the IPU Theo-Ben Gurirab, Swiss President and Foreign Minister Micheline Calmy-Rey and the President of the Swiss National Council Jean-Rene Germanier. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey delivers a speech during the opening ceremony of the 125th Assembly of the Inter-Parliamentary Union (IPU), in Bern October 16, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey delivers a speech during the opening ceremony of the 125th Assembly of the Inter-Parliamentary Union (IPU), in Bern October 16, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS HEADSHOT) 

United Nations Secretary General Ban Ki-Moon (R) shakes hands with Swiss President and Foreign Minister Micheline Calmy-Rey (L) next to the President of the Swiss National Council Jean-Rene Germanier (C) during the opening ceremony of the 125th Assembly of the Inter-Parliamentary Union (IPU), in Bern October 16, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (R) shakes hands with Swiss President and Foreign Minister Micheline Calmy-Rey (L) next to the President of the Swiss National Council Jean-Rene Germanier (C) during the opening ceremony of the 125th Assembly of the Inter-Parliamentary Union (IPU), in Bern October 16, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) talks to Swiss President and Foreign Minister Micheline Calmy-Rey before a lunch, in Pohlern near Bern October 16, 2011. Ban Ki-Moon will attend the 125th Assembly of the Inter-Parliamentary Union (IPU) that takes place in Bern until October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) talks to Swiss President and Foreign Minister Micheline Calmy-Rey before a lunch, in Pohlern near Bern October 16, 2011. Ban Ki-Moon will attend the 125th Assembly of the Inter-Parliamentary Union (IPU) that takes place in Bern until October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (2nd R) and Swiss President and Foreign Minister Micheline Calmy-Rey arrive for a lunch, in Pohlern near Bern October 16, 2011. Ban Ki-Moon will attend the 125th Assembly of the Inter-Parliamentary Union (IPU) that takes place in Bern until October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) talks to Swiss President and Foreign Minister Micheline Calmy-Rey before a lunch, in Pohlern near Bern October 16, 2011. Ban Ki-Moon will attend the 125th Assembly of the Inter-Parliamentary Union (IPU) that takes place in Bern until October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

United Nations Secretary General Ban Ki-Moon (L) and his wife Soon-taek (2nd L) listen to Swiss President and Foreign Minister Micheline Calmy-Rey (R ) before a lunch, in Pohlern near Bern October 16, 2011. Ban Ki-Moon will attend the 125th Assembly of the Inter-Parliamentary Union (IPU) that takes place in Bern until October 19, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

German President Christian Wulff (R-L) Swiss President Micheline Calmy-Rey and Swiss theologian and author Hans Kueng arrive at the Berlin Philharmonic October 15, 2011. REUTERS/Tobias Schwarz (GERMANY - Tags: POLITICS RELIGION) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Swiss President Micheline Calmy-Rey holds a piglet in her arms as she visits the agriculture and food fair (OLMA) on its opening day in St. Gallen, October 13, 2011. REUTERS/Christian Hartmann (SWITZERLAND - Tags: AGRICULTURE POLITICS) 

Indian President Pratibha Devisingh Patil (R) and her Swiss counterpart Micheline Calmy-Rey depart the "La Suisse" boat after a cruise on Leman Lake in Nyon near Geneva October 4, 2011. President Patil is on a two-day state visit to Switzerland. REUTERS/Fabrice Coffrini/Pool (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (R) stands next to her Swiss counterpart Micheline Calmy-Rey at the University of Lausanne October 4, 2011. President Patil is on a two-day state visit to Switzerland. REUTERS/Fabrice Coffrini/Pool (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (2nd R) and her Swiss counterpart Micheline Calmy-Rey (3rd R) are welcomed by State Councillor and Head of Department of Education, Youth, and Culture of Canton of Vaud Anne-Catherine Lyon (2nd L) and University Rector Dominique Arlettaz (L) upon their arrival at the University of Lausanne October 4, 2011. President Patil is on a two-day state visit to Switzerland. REUTERS/Fabrice Coffrini/Pool (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (R) and her Swiss counterpart Micheline Calmy-Rey (3rd R) are welcomed by State Councillor and Head of Department of Education, Youth, and Culture of Canton of Vaud Anne-Catherine Lyon (2nd L) and University Rector Dominique Arlettaz (L) upon their arrival at the University of Lausanne October 4, 2011. President Patil is on a two-day state visit to Switzerland. REUTERS/Fabrice Coffrini/Pool (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (L) waves next to her Swiss counterpart Micheline Calmy-Rey as they sit on the boat "La Suisse" near Morges on Leman Lake October 4, 2011. President Patil is on a two-day state visit to Switzerland. REUTERS/Fabrice Coffrini/Pool (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (front) stands with Swiss President Micheline Calmy-Rey during the official welcome ceremony for her visit to Switzerland in Bern October 3, 2011. REUTERS/Adrian Streun (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (2nd L) waves to spectators next to her husband Devisingh Ramsingh Shekhawat (L), Swiss President Micheline Calmy-Rey (2nd R) and her husband Andre Rey during the welcome ceremony for an official visit to Switzerland in Bern October 3, 2011. REUTERS/Adrian Streun (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (L) and Indian President Pratibha Devisingh Patil (R) review the honour guard during her official visit to Switzerland in Bern October 3, 2011. REUTERS/Adrian Streun (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (L) and Indian President Pratibha Devisingh Patil (R) review the honour guard during her official visit to Switzerland in Bern October 3, 2011. REUTERS/Adrian Streun (SWITZERLAND - Tags: POLITICS) 

Swiss army soldiers stand guard on the Federal Square before Swiss President Micheline Calmy-Rey and Indian President Pratibha Devisingh Patil arrive at an official welcoming ceremony for Patil's visit to Switzerland in Bern October 3, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (R) and Indian President Pratibha Devisingh Patil wave to spectators during her official visit to Switzerland in Bern October 3, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Indian President Pratibha Devisingh Patil (L) waves to spectators with Swiss President Micheline Calmy-Rey during the official welcoming for her visit to Switzerland in Bern October 3, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (L) walks next to Indian President Pratibha Devisingh Patil (2nd R) past the honour guard during her official visit to Switzerland in Bern October 3, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (L) walks next to Indian President Pratibha Devisingh Patil (R) past the honour guard during her official visit to Switzerland in Bern October 3, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey speaks during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey attends the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS HEADSHOT) 

Swiss Social Democrats (SP) President Christian Levrat (L) applauds for Swiss President and Foreign Minister Micheline Calmy-Rey during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. Calmy-Rey will retire from office at the end of this year. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey leaves the stage during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. Calmy-Rey will retire from office at the end of this year. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss Social Democrats (SP) President Christian Levrat (L) applauds for Swiss President and Foreign Minister Micheline Calmy-Rey during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. Calmy-Rey will retire from office at the end of this year. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss Social Democrats (SP) President Christian Levrat (L) applauds for Swiss President and Foreign Minister Micheline Calmy-Rey during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. Calmy-Rey will retire from office at the end of this year. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss Minister of Justice Simonetta Sommaruga (L) speaks to Swiss President and Foreign Minister Micheline Calmy-Rey (R) and Swiss Social Democrats (SP) President Christian Levrat during the Swiss Social Democratic Party (SP) meeting in Biel, October 1, 2011. REUTERS/Michael Buholzer (SWITZERLAND - Tags: POLITICS) 

Swiss President and Foreign Minister Micheline Calmy-Rey speaks in the National Council during a debate in the Autumn parliament session in Bern September 29, 2011. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS) 

Tunisia's Prime Minister Beji Caid Sebsi (C) and European Union's foreign policy chief Catherine Ashton (L) talk near Swiss President and Foreign Minister Micheline Calmy-Rey (R) during the opening of the first meeting of the Tunisia-European Union task force in Tunis September 28, 2011. REUTERS/Zoubeir Souissi (TUNISIA - Tags: POLITICS) 

Switzerland's President Micheline Calmy-Rey addresses the 66th United Nations General Assembly at the U.N. headquarters in New York, September 21, 2011. REUTERS/Chip East (UNITED STATES - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (R) welcomes Kuwait's Prime Minister Sheikh Nasser al-Mohammed al-Sabah for an official visit in Bern September 14, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

Swiss President Micheline Calmy-Rey (R) welcomes Kuwait's Prime Minister Sheikh Nasser al-Mohammed al-Sabah for an official visit in Bern September 14, 2011. REUTERS/Ruben Sprich (SWITZERLAND - Tags: POLITICS) 

WTO Secretary general Pascal Lamy (L) gestures next to Swiss president Micheline Calmy-Rey during the cornerstone laying ceremony for the extension of the World Trade Organization (WTO) headquarters in Geneva September 12, 2011. REUTERS/Denis Balibouse (SWITZERLAND - Tags: POLITICS BUSINESS CONSTRUCTION) 

Swiss president Micheline Calmy-Rey reacts to a speech during the cornerstone laying ceremony for the extension of the World Trade Organization (WTO) headquarters in Geneva September 12, 2011. REUTERS/Denis Balibouse (SWITZERLAND - Tags: POLITICS BUSINESS CONSTRUCTION) 

Swiss president Micheline Calmy-Rey smiles during the cornerstone laying ceremony for the extension of the World Trade Organization (WTO) headquarters in Geneva September 12, 2011. REUTERS/Denis Balibouse (SWITZERLAND - Tags: POLITICS BUSINESS CONSTRUCTION) 

Swiss president Micheline Calmy-Rey smiles during the cornerstone laying ceremony for the extension of the World Trade Organization (WTO) headquarters in Geneva September 12, 2011. REUTERS/Denis Balibouse (SWITZERLAND - Tags: POLITICS BUSINESS CONSTRUCTION) 

Swiss president Micheline Calmy-Rey (R) smiles next to WTO Secretary general Pascal Lamy during the cornerstone laying ceremony for the extension of the World Trade Organization (WTO) headquarters in Geneva September 12, 2011. REUTERS/Denis Balibouse (SWITZERLAND - Tags: POLITICS BUSINESS CONSTRUCTION) 

Swiss Social Democrats party (SPS) President Christian Levrat (L) and SPS faction chief Ursula Wyss walk past the Swiss Parliament in Bern, September 7, 2011. Swiss President and Foreign Affairs Minister Micheline Calmy-Rey of the SPS, 66, confirmed on Wednesday that she will retire from office at the end of this year. REUTERS/Pascal Lauener (SWITZERLAND - Tags: POLITICS)