Chinese dissident artist Ai Weiwei (R) holds a rain cover to protect a Syrian refugee woman from the rain, as she performs in a field, on a piano brought by the artist, near a makeshift camp on the Greek-Macedonian border, near the village of Idomeni, Greece March 12, 2016. Photo: Reuters
US Secret Service agents detain a man after a disturbance as U.S. Republican presidential candidate Donald Trump spoke at Dayton International Airport in Dayton, Ohio March 12, 2016. Photo: Reuters
US President Barack Obama tries on a supporter's cowboy hat after delivering remarks at a Democratic National Committee (DNC) event at Gilley's Club in Dallas, Texas March 12, 2016. Photo: Reuters
US Democratic presidential candidate Hillary Clinton waves to supporters during a campaign stop in Saint Louis, Missouri March 12, 2016. Photo: Reuters
Stranded refugees and migrants try to protect themselves from the rain next to a shelter for refugees and migrants at the port of Piraeus, near Athens, Greece, March 12, 2016. Photo: Reuters
A resident splashes a pail of water on charred houses after a fire razed through residential area in San Andres Bukid, metro Manila March 12, 2016. Authorities are investigating the cause of the fire, local media reported. Photo: Reuters
Pro-government fighters ride on a tank in the Bir Basha neighbourhood after they took the area from Houthi fighters in Yemen's southwestern city of Taiz March 11, 2016. Photo: Reuters
Sasha Obama, daughter of US President Barack Obama, attends her first State Dinner in honour of the Prime Minister of Canada Justin Trudeau and his wife Sophie Gregoire-Trudeau at the White House in Washington March 10, 2016. Photo: Reuters
