Iran's state TV is reporting that the country's powerful Revolutionary Guards have established a new naval base to reinforce its authority over three Persian Gulf islands also claimed by neighboring United Arab Emirates.

The Sunday report says the base near Bandar-e Lengeh some 700 miles south of Tehran is the Guards' fifth in the Gulf.

The Iranian-controlled islands of Abu Musa, Greater Tunb and Lesser Tunb dominate the approach to the strategic Strait of Hormuz, a key waterway through which about one-fifth of the world's oil supply passes.