Seventeen U.S. service members have been killed since the war in Iran began.
President Donald Trump announced "major combat operations" against Iran on Feb. 28, with massive joint U.S.-Israeli strikes targeting military, government and infrastructure sites.
Delegations from the U.S. and Iran entered negotiations in June aimed at a war-ending deal based on a memorandum of understanding signed by both countries.
The U.S. and Iran have nonetheless continued to exchange strikes, with the strategic Strait of Hormuz the primary flashpoint.
Kuwait's army said its air defenses are intercepting Iranian drone attacks.
Iranian state media Fars said that the Ali Al Salem Base, which hosts U.S. troops, was targeted.
President Donald Trump is comparing the number of American deaths in the Iran war so far with the number of causalities in prior American conflicts.
One day before he is expected to attend the dignified transfer for at least two Americans killed over the weekend, Trump took to social media to compare the number of Americans killed in his war so far:
"Afghanistan War: 20 years, 2,000 DEAD.
Iraq War: 9 years, 4,600 DEAD.
Vietnam War: 19 years and 5 months, 58,220 DEAD.
Korean War: 3 years and 1 month, 36,574 DEAD.
Venezuela War: 1 day, 0 DEAD.
Iran Military Conflict: 4 months, 18 DEAD," Trump wrote in a post on social media.
Some Senate Democrats on Tuesday called out the Trump administration’s handling of the war in Iran, accusing them of misrepresenting the number of casualties and widening the war as the lawmakers demanded more transparency.
“The ceasefire collapsed. The war is escalating. American troops are paying the price. Iran knew it attacked our bases. The Pentagon knew our troops were wounded. The only people kept in the dark were the American people. That's not operational security. It's political protection for Donald Trump,” said Senate Minority Leader Chuck Schumer.
Sen. Tim Kaine, D-Va., sounded exasperated as he talked about Trump’s threats to escalate the war amid numerous troop casualties despite Congress voting to limit Trump’s war powers in the Middle East. Kaine said the administration needs to have an explanation as to why servicemembers were killed.
"You better have a really good answer for that question. And as of right now, this war of choice that Donald Trump started, he cannot answer that question. Congress has definitively declared both houses that this war is illegal. Only we in the Constitution have that power. The president is ignoring us, even though that declaration was made by two Republican majority houses,” Kaine said.
Rep. Thomas Massie, R-Ky., said he is not seeing enough transparency from the Trump administration regarding casualties and killing in action in the Middle East as a result of hostilities with Iran.
"Truth is first casualty of war, so we honestly have no idea what's going over there," Massie told ABC News. "I would trust some foreign news source or some satellite images from a commercial third party, more than I would our government.”
Secretary of Defense Pete Hegseth told congressmembers on Capitol Hill that the war in Iran has cost the U.S. $37.5 billion so far.
Hegseth said this includes estimated costs through Sept. 30.
