President Trump's  comments to reporters  on Tuesday that he expects the U.S. to end its war with Iran in two or three weeks  is buoying investors by easing global oil prices and boosting stocks. Yet such optimism is certain to fade quickly unless Iran agrees to reopen the  Strait of Hormuz  soon, according to economists, who warn that crude prices could continue to soar even if the Trump administration moves to wind down military operations in the region.  "The scary scenarios are,