"If the enemy attempts a ground operation on Iranian islands or anywhere else on our territory, or if it seeks to impose costs on Iran through naval manoeuvres in the Persian Gulf and the Sea of Oman, we will open other fronts as a 'surprise'," the official was quoted as saying by the Tasnim agency.

"The Bab el-Mandeb Strait is among the most strategic straits in the world, and Iran has both the will and the capability to pose a fully credible threat against it," the official continued.