Unimpressed with their rarefied surroundings, the stray cats eventually wandered off without incident, leaving the stage to the dignitaries gathered in Turkey.
The investigation continues into the deadly attacks in Paris on Friday, and in Germany, a major soccer match was cancelled Tuesday after a bomb threat.
NPR's Robert Siegel talks to Marine Le Pen, a French politician who is the president of the far-right National Front, the largest political party in France in 2014.
Traces of explosives were found on the wreckage. All 224 passengers and crew were killed in last month's crash in Egypt's Sinai Peninsula. An affiliate of ISIS claimed responsibility.
Paris has long been a city of immigrants. But there are now fears of repercussions against the refugees who are streaming into Europe at a faster pace from places like Syria.
In comments after a meeting of the G-20, Putin implied that Russia's isolation from the West was nearing an end. He said the fight against terrorism had to be undertaken by a coalition.
Elaine Sciolino, the former Paris bureau chief for The New York Times, says the city's recent terror attacks highlight growing tensions concerning multiculturalism and immigration in France.