French outgoing President Nicolas Sarkozy (2nd L, front) shakes hands with his successor Francois Hollande (3rd L, front) at the Elysee Palace in Paris, France, May 15, 2012. The power handover ceremony between Sarkozy and Francois Hollande was held here Tuesday morning, when Francois Hollande was officially sworn in as France's president. [Xinhua]

French outgoing President Nicolas Sarkozy and his wife Carla Bruni, watched by his successor Francois Hollande and his life companion Valerie Trierweiler, leave the Elysee Palace in Paris, France, May 15, 2012. The power handover ceremony between Sarkozy and Hollande was held here on Tuesday morning, when Francois Hollande was officially sworn in as France's president. [Xinhua]

French outgoing President Nicolas Sarkozy leaves the Elysee Palace in Paris, France, May 15, 2012. The power handover ceremony between Sarkozy and Francois Hollande was held here Tuesday morning, when Francois Hollande was officially sworn in as France's president. [Xinhua]

France's outgoing President Nicolas Sarkozy's wife Carla Bruni (L), welcomes Francois Hollande's companion Valerie Trierweiler at the Elysee Palace in Paris, France, May 15, 2012. The power handover ceremony between Sarkozy and Francois Hollande was held here on Tuesday morning, when Hollande was officially sworn in as France's president. [Xinhua]

France's outgoing President Nicolas Sarkozy (L) welcomes his successor Francois Hollande at the Elysee Palace in Paris, France, May 15, 2012. The power handover ceremony between Sarkozy and Hollande was held here on Tuesday morning, when Hollande was officially sworn in as France's president. [Xinhua]

Elysee Palace is seen during the power handover ceremony in Paris, France, May 15, 2012. The power handover ceremony between Nicolas Sarkozy and Francois Hollande was held here on Tuesday morning, when Hollande was officially sworn in as France's president. [Xinhua]