Tehran, July 30 (IANS) The Islamic Revolutionary Guard Corps (IRGC) on Thursday warned of a harsh and firm response to nations involved in the US attacks and crimes against Iran, local media reported. The IRGC said that Iran's determination and steadfastness have destroyed the enemy front. The IRGC warned of a harsh response to nations that are involved in helping the US if they do not change their behaviour. Highlighting that the action was taken in response to attacks carried out by the US military against Iran, the IRGC vowed to continue resistance until Iran faces "threats, illegal and hostile moves" from the US forces. Last week, Iran and Oman held technical talks in Tehran to discuss arrangements for safe navigation through the Strait of Hormuz.