A photograph released by Iranian state media showing shops in Tehran on Dec. 30 that were closed after protests.

Nicaragua’s co-presidents, Daniel Ortega and his wife, Rosario Murillo, in Managua this month in a photograph released by state media.

Young men carried Albert Ojwang’s coffin at his funeral in Kakoth village, Kenya, on Friday.

Tear gas and smoke at a protest in Nairobi, the Kenyan capital, on Wednesday. As demonstrations flared, banks and businesses in the center of the city were closed amid a heavy police presence.

Russian military instructors appeared on state television in Niger after arriving in the capital, Niamey, in April.

Yevgenia Berkovich, left, and Svetlana Petriychuk inside a courthouse in Moscow in May. The two are being tried on charges of terrorism relating to the production of their play, “Finist the Brave Falcon.”

Students occupied Columbia’s Hamilton Hall in April 1972.

Solar panels at the Sao Mai power plant in An Giang Province, Vietnam, last year. The country has been awarded $15.5 billion in grants and loans in exchange for a commitment to renewable energy.

Nobel laureate Narges Mohammadi is serving a 10-year sentence in Iran’s Evin prison. “We are extremely worried,” her husband, Taghi Rahmani, said. “Her life is in danger.”

A Ukrainian soldier firing a 155 mm howitzer, the type of weapon used to launch cluster munitions, in the Donetsk region in March.