A large anti-American banner that reads in Persian, "Our cannons are full", referring to the Strait of Hormuz, is placed across a bridge that spans the a highway in Tehran on May 12, 2026. Iran's chief negotiator said May 12, that Washington must accept Tehran's latest peace plan or face failure, after US President Donald Trump warned the truce in the Middle East war was on the brink of collapse. (Photo by ATTA KENARE / AFP via Getty Images) /

(L/R) US Secretary of Defense Pete Hegseth shakes hands with Chairman of the Joint Chiefs of Staff General Dan Caine as they arrive for a Senate Committee on Appropriations, Subcommittee on Defense hearing to examine the 2027 budget for the Department of Defense on Capitol Hill in Washington, DC, on May 12, 2026. (Photo by Jim WATSON / AFP via Getty Images)

The Iran flag flutters from a tall flagpole over high-rise buildings in northern Tehran on May 12, 2026. Iran's chief negotiator said May 12, that Washington must accept Tehran's latest peace plan or face failure, after US President Donald Trump warned the truce in the Middle East war was on the brink of collapse. (Photo by ATTA KENARE / AFP via Getty Images) /

US Chairman of the Joint Chiefs of Staff General Dan Caine arrives for a Senate Committee on Appropriations, Subcommittee on Defense hearing to examine the 2027 budget for the Department of Defense on Capitol Hill in Washington, DC, on May 12, 2026. (Photo by Jim WATSON / AFP via Getty Images)

Highrise buildings are seen in northern Tehran on May 12, 2026. Iran's chief negotiator said May 12, that Washington must accept Tehran's latest peace plan or face failure, after US President Donald Trump warned the truce in the Middle East war was on the brink of collapse. (Photo by ATTA KENARE / AFP via Getty Images) /

US Chairman of the Joint Chiefs of Staff General Dan Caine arrives for a Senate Committee on Appropriations, Subcommittee on Defense hearing to examine the 2027 budget for the Department of Defense on Capitol Hill in Washington, DC, on May 12, 2026. (Photo by Jim WATSON / AFP via Getty Images)

US Chairman of the Joint Chiefs of Staff General Dan Caine arrives for a Senate Committee on Appropriations, Subcommittee on Defense hearing to examine the 2027 budget for the Department of Defense on Capitol Hill in Washington, DC, on May 12, 2026. (Photo by Jim WATSON / AFP via Getty Images)

Defense Secretary Pete Hegseth watches as Chairman of the Joint Chiefs of Staff Gen. Dan Caine testifies at a House Appropriations subcommittee budget hearing for the Department of Defense, Tuesday, May 12, 2026, in Washington. (AP Photo/Alex Brandon)