Voters line up to cast their ballots at a polling station in Qom, Iran.
Death Valley National Park enjoys a rare "super bloom" of wildflowers.
(AP Photo/Jae C. Hong)
A Soyuz capsule carrying U.S. astronaut Scott Kelly and Russian cosmonauts Sergei Volkov and Mikhail Korniyenko descends back to Earth over Dzhezkazgan, Kazakhstan.
A woman stands among the ruins of damaged buildings in Cizre, Turkey.
(YASIN AKGUL/AFP/Getty Images)
A farmer sleeps at the International Agricultural Show in Paris.
A spring horse racing event in Tsagaan Khutul, Mongolia.
Tents of refugees and migrants at the Greek-Macedonian border, near Idomeni, Greece.
(AP Photo/Eldar Emric)
A flag-raising ceremony at Tiananmen Square in Beijing.
Supporters cheer at a campaign rally for Bernie Sanders in East Lansing, Michigan.
The sun sets behind the Statue of Liberty in New York's Harbor.
Chickens sit atop a cage at a roadside meat vendor in New Delhi, India.
Air-conditioning units dot the facade of the People's Park Complex residential apartment in Singapore's Chinatown.
Indigenous Sahrawi girls hug each other next to their school in a refugee camp in Tindouf, Algeria.
(REUTERS/Zohra Bensemra)**See last week's best photojournalism**