Zalmay Khalilzad, the U.S. special representative for Afghanistan reconciliation, speaks with Asila Wardak, a human rights activist, during intra-Afghan dialogue talks in Doha, Qatar, on July 8.
Iran's Foreign Minister Javad Zarif speaks during a joint press conference with Norway's Foreign Minister after a meeting, on August 22, 2019 in Oslo. (STIAN LYSBERG SOLUM/AFP/Getty Images)
Danish Prime Minister Mette Frederiksen talks to the press after U.S. President Donald Trump canceled his state visit after her government said its territory of Greenland was not for sale in Copenhagen on Aug. 21.
Russian President Vladimir Putin addresses the Federal Assembly at Moscow's Manezh Central Exhibition Hall for his state of the union address on March 1, 2018.
People watch a television news screen showing file footage of North Korea's missile launch, at a railway station in Seoul on August 10, 2019. (JUNG YEON-JE/AFP/Getty Images)
U.S. Undersecretary of Defense for Policy Michèle Flournoy listens during a hearing before the U.S. Senate Armed Services Committee on Capitol Hill in Washington on Sept. 24, 2009.
US President Donald Trump boards Air Force One at Pittsburgh International Airport in Pennsylvania on August 13, 2019, before returning to his Bedminster golf club in New Jersey. Trump met with his national security advisers on Friday to discuss Afghanistan. (NICHOLAS KAMM/AFP/Getty Images)
Taiwan army soldiers pose for photos on an US-made M60-A3 tank after a life-fire exercise in Taichung, central Taiwan, on January 17, 2019. (SAM YEH/AFP/Getty Images)
Turkish-backed Syrian fighters participate in a training maneuver using an armored vehicle provided by the Turkish army, near the town of Tal Hajar in Aleppo province, on Jan. 16.
U.S. Defense Secretary Mark Esper and U.S. Secretary of State Mike Pompeo speak during a press conference at the Parliament of New South Wales in Sydney on Aug. 4.
Soviet leader Mikhail Gorbachev and U.S. President Ronald Reagan sign a landmark treaty eliminating U.S. and Soviet intermediate-range and shorter-range nuke missiles in Washington in December 1987.
Iranian Foreign Minister Javad Zarif discusses current developments in the Middle East at the Council on Foreign Relations on July 17, 2017 in New York City.
