German Chancellor Angela Merkel (L) and US President Donald Trump speak during a bilateral meeting at the G7 Summit in 2019. Trump is one of four U.S. Presidents Merkel worked with during her time as Germany's Chancellor. NICHOLAS KAMM/AFP via Getty Images hide caption
President Donald Trump speaks during a meeting with the Dutch Prime Minister Mark Rutte in the Oval Office of the White House, Thursday, July 18, 2019, in Washington. Alex Brandon/AP hide caption
Palestinians walk past destruction following months of Israeli bombardment in the southern Gaza Strip city of Khan Yunis earlier this week. EYAD BABA/AFP via Getty Images hide caption
Former Secretary of Defense Chuck Hagel (shown here at NATO headquarters in Brussels in 2015) explains the challenges that President-elect Trump's pick to lead the Department of Defense will inherit. Virginia Mayo/AP hide caption
In this image provided by the U.S. Army, U.S. soldiers conduct live fire testing at White Sands Missile Range, N.M., on Dec. 14, 2021, of early versions of the Army Tactical Missile System. John Hamilton/U.S. Army via AP hide caption
In this image provided by the U.S. Army, soldiers, from the 3rd Battalion, 321st Field Artillery Regiment of the 18th Field Artillery Brigade out of Fort Bragg N.C., conduct live fire testing at White Sands Missile Range, N.M., on Dec. 14, 2021, of early versions of the Army Tactical Missile System. John Hamilton/White Sands Missile Range, via Associated Press hide caption
From left: Michelle Salaün, Jeannine Plassard and Marie-Annick Gouez, the daughters of Catherine Tournellec Salaün, stand at their mother's grave in Plabennec, in France's Brittany region, in June. Eleanor Beardsley/NPR hide caption
A 2016 file photo of Secretary of Defense nominee Pete Hegseth. Hegseth has served in the National Guard and is now a Fox News host. If confirmed, he would be the least experienced defense secretary in American history. Spencer Platt/Getty Images hide caption
Former U.S. Rep. from Hawaii Tulsi Gabbard speaks during a rally for former President Donald Trump on Oct. 22 in Greensboro, N.C. Anna Moneymaker/Getty Images hide caption
This courtroom sketch depicts a former detainee at Abu Ghraib prison, Salah Al-Ejaili (foreground with glasses), at the trial of CACI, a Virginia-based military contractor who is accused of contributing to the abuse and torture of detainees at Abu Ghraib, in U.S. District Court in Alexandria, Va., on April 16. Dana Verkouteren/AP hide caption
Members of the Nuclear Emergency Support Team training for a radiological contamination scenario. For 50 years, the secretive team has been the first line of defense against nuclear emergencies. NNSA hide caption
Sikh activist Gurpatwant Singh Pannun stands for a photograph in New York City, U.S., October 25, 2024. Jeenah Moon for NPR hide caption
Pro-Trump supporters storm the U.S. Capitol on January 6, 2021. Ahead of the 2024 election results, civil society groups are working to prevent future violence. Samuel Corum/Getty Images hide caption