In Moscow, Russian Foreign Minister Sergey Lavrov (right) and Turkey's Foreign Minister Mevlut Cavusoglu offer flowers in memory of Andrei Karlov, Russia's ambassador to Turkey. Karlov was fatally shot Monday in Ankara.
Iran Air has used Boeing 747 passenger jets for years — but their purchase was arranged before 1979's revolution. One of the planes is seen here at the domestic Mehrabad airport in Tehran in 2013.
Behrouz Mehri/AFP/Getty Images
A destroyed vehicle bearing a radar antenna is pictured in the Yemeni port city of Hodeidah on Oct. 13. The U.S. military directly targeted Yemen's Houthi rebels for the first time, hitting radar sites controlled by the insurgents after U.S. warships came under missile attacks twice in four days.
Richard Ratcliffe, second from right, delivers a petition to the British prime minister's official residence calling on Iran to release his wife, Nazanin Zaghari-Ratcliffe. She was stopped in April at the airport in Tehran with the couple's 2-year-old daughter as they tried to return to Britain after a family holiday. Ratcliffe was at the United Nations this week appealing for their release.
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Shahram Amiri, an Iranian nuclear scientist, attends a news briefing while holding his son Amir Hossein as he arrives at the Imam Khomeini airport just outside Tehran, Iran, after returning from the United States in 2010.
Secretary of State John Kerry talks with Iranian Foreign Minister Mohammad Javad Zarif in Vienna on Jan. 16, after the International Atomic Energy Agency verified that Iran met all conditions under the nuclear deal. The accord is now 1-year-old. Iran is seen as abiding by requirements of the deal, but its relations with the U.S. and other rivals have not improved on other fronts.