United States yesterday imposed a range of sanctions and restrictions on Iranian and Iranian-linked officials and entities after an effort over the weekend to reimpose UN sanctions on Tehran was largely rejected. <br />''<br />''US President Donald Trump said, he is imposing sanctions on Iranians for violating a UN arms embargo and demanded enforcement by US allies, who roundly dispute that he has any such authority. Mr. Trump further said, his actions sent a clear message to the Iranian regime and those in the international community who refuse to stand up to Iran.<br />''<br />''The Trump Administration said, it was imposing sanctions on 27 individuals and entities under a UN resolution including Iran's Defence Ministry, its Atomic Energy Organization and Venezuela's leftist leader Nicolas Maduro, whom Washington is trying to topple.<br />