Iran says new sanctions threatened by 'desperate' US will fail

By Elwely Elwelly and Menna AlaaElDin DUBAI, Aug 23 (Reuters) - Iran's foreign minister dismissed the threat of new U.S. sanctions as a sign of desperation on Sunday and said the expected new measures would fail to defeat Tehran. U.S. Treasury Secretary Scott Bessent, who is due to hold a press conference at 2 p.m. EDT (1800 GMT) on Monday, has threatened to impose "the toughest sanctions in history" on Iran.