Louvre Museum

French President Francois Hollande, King Willem Alexander and Queen Maxima of the Netherlands look at a Rembrandt painting during a visit at the Louvre Museum in Paris...French President Francois Hollande (C), King Willem Alexander (2ndR) and Queen Maxima (R) of the Netherlands look at a Rembrandt painting, Portrait of Marten Soolmans, during a visit at the Louvre Museum in Paris, France, as part of their State visit to France March 10, 2016.  REUTERS/Etienne Laurent/Pool

Etienne Laurent/Reuters

French President Francois Hollande, King Willem Alexander, and Queen Maxima of the Netherlands look at a Rembrandt painting, Portrait of Marten Soolmans, during a visit at the Louvre Museum in Paris, France

French President and German Chancellor visit the Louvre Museum...epa03723874 French President Francois Hollande (R) welcomes German Chancellor Angela Merkel (L) at the entrance of the Square Court at the Louvre Museum as they visit an exhibition dedicated to German painters in Paris, France, 30 May 2013.  EPA/ETIENNE LAURENT / POOL MAXPPP OUT

Etienne Laurent/EPA

German chancellor Angela Merkel greets French president Fran├žois Hollande on her arrival at the Louvre Museum in Paris, France, on Thursday. They are visiting an exhibition dedicated to German painters in Paris