By Nafisa Eltahir, Elwely Elwelly and Tala RamadanDUBAI, July 30 (Reuters) - A drone strike on gas vessels in Egypt's Mediterranean port of Damietta signalled a potential new front in the U.S.-Iran war, raising the prospect of threats to navigation through the Suez Canal, a last remaining safe export route for Saudi oil.The Egyptian cabinet said on Thursday that an initial investigation showed that an unidentified drone caused a fire on Wednesday on two vessels at Damietta port, near the Suez Canal, which links the Mediterranean with the Red Sea.

A drone hit a US-owned gas storage tanker at Egypt’s Mediterranean port of Damietta, British maritime security firm Ambrey said on Wednesday, citing an

According to a Reuters report citing two security sources, the incident may have been caused by drones targeting Egyptian gas storage tankers.