Iran’s military warned the United Arab Emirates against allowing attacks from its territory on two disputed islands in the Gulf, near the strategic Strait of Hormuz, reports AFP.

“We warn the United Arab Emirates if any further aggression originates from its territory against the Iranian islands of Abu Musa and Greater Tunb in the Persian Gulf, Iran’s powerful armed forces will subject Ras Al Khaimah in the UAE to heavy strikes,” the military’s operational command Khatam Al-Anbiya said in a statement carried by Tasnim news agency.

Abu Musa and the Greater Tunb islands, which are controlled by Iran but claimed by the UAE, have long been a source of dispute between the two countries.

The islands are located in the Gulf near the entrance to the Strait of Hormuz, through which normally about a fifth of the world’s oil passes.