Foreign Minister Mohammad Javad Zarif has once again hit out at the United States for its refusal to lift Iran sanctions amid the deadly coronavirus pandemic, saying that Washington is upgrading its “economic terrorism” to a new level of “medical terror” against Iranians."US has gone from sabotage & assassinations to waging an economic war & #EconomicTerrorism on Iranians—to #MedicalTerror amidst #covid19iran," Zarif said in a post on his official Twitter account on Sunday.Iran's top diplomat added that the US "medical terror" against Iranians "even exceeds what would be permissible on battlefield."