The Globe and Mail reports in its Monday edition that Iran's top security chief warned that any country supporting new U.S. economic measures against Iran would be seen as an "act of war." An Associated Press dispatch to The Globe reports that Treasury Secretary Scott Bessent will announce new measures on Monday after the U.S. vowed unprecedented economic warfare and isolation on a country long under sanctions. The hard-line leader of Iran's Supreme National Security Council, Mohsen Rezaei, issued his latest warning on X, with the comments quickly shared by Iranian state media. He said Saturday, "If [Trump] wants to do something, we will retaliate in a seismic manner." He said Iran would target other oil-shipping routes from the Persian Gulf -- alternatives to the Strait of Hormuz. Iranian President Masoud Pezeshkian earlier Sunday said the memorandum of understanding signed in mid-June was the best way to move beyond a situation of "neither war nor peace." There were no confirmed attacks in the Strait of Hormuz over the past 48 hours with shipping traffic still at reduced levels. The U.S. military reported that its blockade of Iranian ports redirected 70 commercial ships and disabled three as of Sunday.