Neither Riyadh nor US Navy fleet overseeing region immediately comment on blast near Jeddah

Kingdom is 5th country to be part of mission to secure vessels in Strait of Hormuz following series of attacks blamed on Iran

Officials say vessel, reportedly UAE-flagged, was being used to smuggle fuel; 11 crew members arrested

Coalition to safeguard oil shipping in strategic route could stumble into 'accidental escalation' with Tehran, analysts warn

Top military official says domestically built Sahand will escort Iranian vessels around Arabian Peninsula as unrest in strategic waterways continues

Officials say HMS Defender will take part in efforts to 'keep essential trade routes secure' after recent shipping conflicts with Iran

Joining UK and Bahrain, PM Morrison announces 'modest, meaningful and time-limited' contribution to maritime force

King Hamad meets US CENTCOM chief, does not elaborate on what role kingdom will take in maritime mission

After failed bid to stop Gibraltar from letting ship go, Washington says vessel still in breach of sanctions by aiding Revolutionary Guards

Grace 1 remains impounded after being seized by the Royal Navy on suspicion of delivering oil to Syria