In possibly related news, four oil tankers in the Middle East - two owned by Saudi Arabia, one owned by the United Arab Emirates and one owned by Norway - were recently damaged by what Saudi and US officials described as "sabotage" attacks, according to CBS News.
The U.S. State Department on Wednesday said it was withdrawing all non-emergency staff from its Baghdad embassy and its consulate in Erbil.
"There is a new efflorescence, a new renaissance of relations between us and many of our Arab neighbors and many non-Arab Muslim countries".
Trump is sending an aircraft carrier group, B-52 bombers and Patriot missiles to the Middle East to counter what the United States calls a heightened threat from Iran to us soldiers and interests in the region.
Iran's top security body dismissed this as "psychological warfare".
Iran denied involvement, though it has repeatedly threatened to block the strait, through which streams about a fifth of world's oil shipments, if the United States tries to stop Iran from exporting oil.
"A war with Iran would be an absolute disaster", Sanders added.
It was also reported on Tuesday that USA investigators believed Iran or groups it supported had used explosives to damage four tankers off the coast of the United Arab Emirates on Sunday.
"They have no business declaring a war without the consent of Congress", she said.
Many have spoken in favour of the 2015 nuclear agreement with Iran, reached between the US, Britain, France, China, Russia and Germany during the Obama Administration, even after Trump pulled the US out of the deal past year and imposed sanctions on Iran.