A Hungarian army officer closes the gate of Hungary's new fence on the 110-mile border with Serbia. Hungary's Prime Minister Viktor Orban has taken a number of controversial steps against migrants.
An International Atomic Energy Agency inspector cuts a uranium enrichment connection at Iran's Natanz facility, 200 miles south of Tehran, in 2014. The U.S. Congress is expected to address the Iranian nuclear deal this month. One unresolved issue: How much work might Iran have done previously on weaponizing its program?