When the American president is in Paris
Paris attacks: US President Obama lays rose for victims
US President Barack Obama has visited the scene of one of the Paris attacks, which took place on 13 November.
He laid a single white rose alongside French President Francois Hollande and Paris Mayor Anne Hidalgo at the Bataclan theatre where one of the attacks took place.
130 people were killed and hundreds more were injured in the attacks.
He is there for the UN climate change summit which opens on Monday.
If you want to read more about the Paris events
http://www.bbc.co.uk/newsround/34819597
d'après http://www.bbc.co.uk/newsround/34961516