Today in Pictures: May 24

President Barack Obama delivers remarks at the National Convention Center in Hanoi, Vietnam. The visit is Obama's first to the country and the third by a sitting president since the end of the Vietnam War in 1975.

Kurt Grumelart of Queensland competes on the high bar as Alexander Waro of New South Wales competes on the parallel bars during the 2016 Australian Gymnastics Championships at Hisense Arena in Melbourne, Australia.

Britain's Queen Elizabeth II is pictured through a gap in a floral exhibit by the New Covent Garden Flower Market, which features an image of the Queen, during a visit to the 2016 Chelsea Flower Show in central London.

President Barack Obama greets people as he walks to his motorcade vehicle after meeting American Chef Anthony Bourdain in a shopping area in Hanoi, Vietnam.

Supporters of nuclear and solar energy rally in the rotunda at the Illinois State Capitol in Springfield as lawmakers gathered to talk about the final week of the legislative session.

An Egyptian journalist lights candles during a vigil for the victims of EgyptAir flight 804 in front of the Journalists' Syndicate in Cairo. The cause of Thursday's crash that killed all 66 people aboard still has not been determined.

Women and children separate grain from soil, after the driver of a truck lost control of a vehicle which spilled grain, in the forest in Machinga, north east of Blantyre, Malawi. Hundreds of villagers thronged the spot and helped themselves to some of the grain. About 2.8 million Malawians - nearly 20 percent of the population - face food insecurity, making the country one of the worst hit in Southern Africa.

Actor and comedian Bill Cosby arrives at the Montgomery County Courthouse for a pre-trial hearing on sexual assault charges in Norristown, Penn.

A farmer takes care of plants covered in volcanic ash in Karo district, in North Sumatra province after the eruption of Mount Sinabung.

A member of the audience holds a Bernie Sanders puppet before the Democratic presidential candidate speaks at a campaign event in Anaheim, California.