TEHRAN — Iran's supreme leader Mojtaba Khamenei said Wednesday that anyone expecting a shift in U.S. policy was "seriously mistaken," hours after midterm elections dealt a blow to President Donald Trump. "Those who still harbor even the slightest hope that the behavior of the hegemonic system might change through partisan or factional shifts, or who imagine that making concessions to the U.S. can dissuade it from hostility towards the Iranian nation, are seriously mistaken," Khamenei said in a written statement published on his website. Democrats seized control of the U.S. Congress in Tuesday's midterms, reflecting anger over living costs, tariffs and the U.S. war against Iran, which has sent fuel prices soaring. Khamenei's remarks come with diplomatic efforts underway to avert renewed fighting in the war, which broke out on February 28. U.S. and Israeli leaders have in recent days threatened to resume attacks against Iran. "Should such aggressions be repeated, the war's scope will become much wider," said Khamenei, who has yet to appear in public since he took power in March. Earlier, I