Head of the International Atomic Energy Agency Rafael Mariano Grossi, left, and Iranian Foreign Minister Hossein Amirabdollahian pictured meeting in Tehran, on Tuesday. Grossi pressed for greater access in the Islamic Republic ahead of diplomatic talks restarting over Tehran's tattered nuclear deal with world powers. Vahid Salemi/AP hide caption
Israeli Prime Minister Naftali Bennett attends a Cabinet meeting Aug. 1 in Jerusalem. Abir Sultan/Pool Photo via AP hide caption
A U.S. Navy hovercraft prepares to hit the beach during amphibious-landing exercises as part of an annual joint U.S.-Philippine military exercise on the shores of San Antonio, facing the South China Sea, in Zambales province, Philippines, on April 11, 2019. Ted Aljibe/AFP via Getty Images hide caption
President Biden waves as he prepares to depart the airport after meeting with Russian President Vladimir Putin in Geneva, on June 16. Brendan Smialowski/AFP via Getty Images hide caption
Joe Biden met with Vladimir Putin in Moscow in 2011, when Biden was U.S. vice president and Putin was Russia's prime minister. A decade later, the two will meet as presidents in Geneva on June 16. Alexander Zemlianichenko/AP hide caption
Friends and family members of slain prominent Lebanese activist and intellectual Lokman Slim (shown in the raised image), attend a memorial ceremony in the garden of the family residence in the capital Beirut's southern suburbs, a week after he was found dead in his car, on Feb. 11. Slim, 58, was an outspoken critic of Hezbollah. Joseph Eid/AFP via Getty Images hide caption
Technicians work inside of a uranium conversion facility producing unit in 2005 outside the city of Isfahan, Iran. After the 2015 Iran nuclear deal put limits on the program, Iran's government has been increasing uranium enrichment since the United States pulled out of deal. Getty Images hide caption
Russian President Vladimir Putin, here at the Tomb of the Unknown Soldier in Moscow in 2017, has seen U.S. relations reach their lowest point since the Cold War. By waiting over a month to congratulate President-elect Joe Biden, Putin tried to show strength and that "he's ready to take the fight all the way to Washington," Russian political commentator Konstantin Eggert says. Ivan Sekretarev/AP hide caption
President-elect Joe Biden introduces key foreign policy and national security nominees and appointments last week in Wilmington, Del. Mark Makela/Getty Images hide caption
Kim Jong Un inspects troops ahead of North Korea's 70th anniversary parade in Pyongyang in 2018. At least one foreign policy expert warns that U.S. adversaries could take advantage of the uncertainty stemming from President Trump's positive coronavirus test. API/Gamma-Rapho via Getty Images hide caption
The U.S. Navy says a limpet mine put a hole in this Panama-flagged, Japanese-owned tanker anchored off Fujairah, United Arab Emirates. The limpet mines used to attack the tanker near the Strait of Hormuz resemble mines displayed by Iran, a Navy explosives expert said Wednesday. Iran denies being involved. Fay Abuelgasim/AP hide caption
Secretary of State Mike Pompeo tells NPR that the U.S. remains committed to the Kurds, American allies in the Syrian war, even as the U.S. plans to withdraw troops from the country. Chip Somodevilla/Getty Images hide caption
U.S. President Donald Trump delivers a speech to U.S. troops at the Yokota Air Base outside Tokyo on Sunday. Japan is the first stop on his five-nation trip. Eugene Hoshiko/AP hide caption
After President-elect Donald Trump's conversation with Taiwan's President Tsai Ing-wen (right), and his subsequent suggestion that the "One China" policy could be reconsidered, a Chinese government spokesman warned that if the policy "is interfered with or damaged, then the healthy development of China-U.S. relations and bilateral cooperation in important areas is out of the question." Evan Vucci, Chiang Ying-ying/AP hide caption
Syrian President Bashar Assad (left) and Russian President Vladimir Putin shake hands at the Kremlin in October 2015. U.S. President-elect Donald Trump faces many foreign policy challenges, which will include dealing with the war in Syria and friction with Russia. Alexei Druzhinin/AP hide caption
Vice President Biden and Turkish Prime Minister Binali Yildirim hold a news conference after meeting Aug. 24 in Ankara, Turkey. While the U.S. and Turkey are close allies, they've been at odds on a number of issues, and the meeting was designed to improve the atmosphere. Adem Altan/AFP/Getty Images hide caption
Hillary Clinton gives a speech Thursday, the final day of the Democratic National Convention, and Donald Trump speaks on July 21, the last day of the Republican National Convention. Saul Loeb/AFP/Getty Images; Jim Watson/Getty Images hide caption
Michigan Sen. Arthur Vandenberg, with arm raised, greets the press at the 1948 Republican Convention. Vandenberg worked closely with President Harry Truman's Democratic administration on foreign policy issues even though he was seeking the Republican nomination to challenge the president. "Politics must stop at the water's edge," Vandenberg famously said. Thomas D. McAvoy/The LIFE Picture Collection/Getty Images hide caption
NPR's Morning Edition host Steve Inskeep interviews President Obama on Dec. 17 in the Oval Office, where they discussed U.S. involvement in the Middle East and the world as a whole. Kainaz Amaria/NPR hide caption
U.S. Secretary of State John Kerry shakes hands with Israeli Prime Minister Benjamin Netanyahu in Tel Aviv on July 23. While the two countries are close allies, they have exchanged criticism during the recent Israel-Hamas fighting in Gaza. Pool/AFP/Getty Images hide caption
President Obama listens as Chinese President Xi Jinping answers a question after a bilateral meeting in California on June 7. Jewel Samad/AFP/Getty Images hide caption
A rebel fighter takes cover inside a damaged building in the eastern Syrian city of Deir al-Zor on Tuesday. The U.S. is training a small number of rebels and has pledged to provide them with arms. Khalil Ashawi/Reuters/Landov hide caption