The sacking of US national security adviser John Bolton was a "sign clear" that Washington's campaign of sanctions against Tehran was failing, an aide to Iranian President Hassan Rouhani said.
"Bolton's marginalisation and his subsequent removal isn't an accident but a clear sign of the defeat of America's maximum pressure strategy" against Iran, Hesameddin Ashena tweeted. "Have no doubt that we have the power to manage the US approach towards Iran and will never back down. The blockade of Iran will break."