Immediately after the Iranian capture of Al-Faw, Saddam declared a new offensive against Iran, Al-Defa al Mutahharakkha (Arabic: The Dynamic Defense), designed to drive deep into Iran. The Iranian border city of Mehran, Ilam Province on the foot of the Zagros Mountains was selected as the first target. This city was situated on an important road leading into Iran. On May 15–19 the Iraqi Army's II Corps supported by helicopter gunships captured the city. Saddam then offered the Iranians to exchange Mehran for Al-Faw. The Iranians rejected the Iraqi offer. Iraq then continued the attack attempting to push deeper into Iran. However, Iraq's attack was quickly smashed by Iranian AH-1 Cobra helicopters with TOW missiles destroying an unspecified amount of Iraqi tanks and vehicles.