The United States on Monday will sanction more than two dozen people and entities involved in Iran's nuclear, missile and conventional arms programs, a senior U.S. official said, putting teeth behind U.N.
Sanctions on Tehran that Washington argues have resumed despite the opposition of allies and adversaries.
A top advisor to Iran's Supreme Leader has warned that those responsible for killing one of the country's top nuclear scientists would face a "calculated and decisive" response. Tehran blames Israel for the attack. David Doyle reports.