Oman's proposal for the Strait of Hormuz has no chance of success, Tehran says. (AP PHOTO)Oman's proposal for the Strait of Hormuz has no chance of success, Tehran says. However, Tehran ruled out Oman's proposal for regional joint management of the strait, saying it had no chance of success. The unnamed military official said attributing attacks on US interests in the region to Iran was a "major miscalculation". Iran effectively shut the strait after the US and Israel attacked Iran on February 28.