In this June 24, 2019, photo, acting Defense Secretary Mark Esper arrives at the Pentagon in Washington. Esper is heading to Europe to try to convince wary NATO allies to work with the Trump administration on Iran sanctions and security in the Middle East. His trip comes amid worries that the U.S. and the Islamic Republic may be on a path to war, even as the Trump administration ratchets up economic pressure on Tehran. (AP Photo/Andrew Harnik)
Featured Photo Galleries
