Iran Islamic Revolutionary Guard Corps: The 21st round of counterattack operation for 'True Promise 4' has been launched According to a report by Golden Finance, the Islamic Revolutionary Guard Corps of Iran announced on the 6th local time that the 21st round of the "True Promise 4" counterattack operation has been launched. The operation combines missile and drone joint strikes and launches the "Kheybar Shekan" ballistic missile, attacking targets located in the center of Tel Aviv.