Fidel Castro sits as he clasps hands with his brother, Cuban President Raul Castro, right, and second secretary of the Central Committee, Jose Ramon Machado Ventura, moments before the playing of the Communist party hymn during the closing ceremonies of the 7th Congress of the Cuban Communist Party, in Havana, Cuba. Fidel Castro formally stepped down in 2008 after suffering gastrointestinal ailments and public appearances have been increasingly unusual in recent years.
Competitors climb in front of the Matterhorn as they start the 20th edition of the Glacier Patrol race in Zermatt, Switzerland. The Glacier Patrol (Patrouille des Glaciers), organized by the Swiss Army, takes place from April 19 to 23. Highly-experienced hiker-skiers trek across the Haute Route along the Swiss-Italian border from Zermatt to Verbier. The race covers 53km by foot and ski, which is equivalent to 110km without altitude difference.
Louis Marquez carries his dog Dallas through floodwaters after rescuing the dog from his flooded apartment on April 19, 2016, in Houston. Storms have dumped more than a foot of rain in the Houston area, flooding dozens of neighborhoods.
A family wakes up after sleeping outside their collapsed home, destroyed by an earthquake in Manta, Ecuador. The strongest earthquake to hit Ecuador in decades flattened buildings and buckled highways along its Pacific coast, sending the Andean nation into a state of emergency.
A firefighter throws a plastic bag of accelerant onto the first ever Cameroon Ivory Burn, attended by U.S. Ambassador to the United Nations Samantha Power at the Palais des Congres in Yaounde, Cameroon, to highlight the need to halt the Ivory trade in order to save Africa's elephants. Power is visiting Cameroon, Chad, and Nigeria to highlight the growing threat Boko Haram poses to the Lake Chad Basin region.
Residents flee as rockets fired from Syria land in the Turkish town of Kilis. More rockets hit a Turkish town on the Syrian border, wounding at least three people, a day after five were killed by fire from an area of Syria controlled by jihadists, a Turkish government official said.
Security officials secure the area surrounding the Ministry of Defense during a gun battle with Taliban militants in Kabul, Afghanistan. At least 28 people were killed and another 327 wounded in a Taliban suicide attack in a high security zone in Kabul, where an explosion was followed by a clash between Afghan troops and insurgents.
Gallery: Taliban Attack Kills Dozens in Kabul
A colorful butterfly sits on a branch of wheat in a field in Peshawar, Pakistan.
A woman walks with a child along the train tracks near a makeshift camp at the northern Greek border point of Idomeni, Greece. More than 11,000 people have been waiting at this border point for over a month hoping it would reopen.