At least 50 soldiers, from the United Arab Emirates and Bahrain, have reportedly been killed, following an attack by Houthi fighters, in Yemen.
At least two policemen were killed, and a further six wounded, in a bomb blast in Bahrain, the deadliest such attack in the country for months.
A series of airstrikes, carried out by a Saudi-led coalition, has killed at least 80 people in Yemen, in the deadliest day of bombing in the past two months of war in the restive country.
A suicide bomber has killed at least 21 worshippers at a Shi’ite mosque in eastern Saudi Arabia, the first attack in the country to have been claimed by the Islamic State.
A Singapore-flagged tanker that was attacked by several smaller Iranian vessels had previously collided with an Iranian oil platform in March, with ongoing efforts to resolve issue.
Iranian naval vessels have fired shots at a Singaporean-flagged tanker in the Gulf, as tensions continue to rise in the region.
A Moroccan Air Force F-16 fighter jet, which was taking part in coalition airstrikes in Yemen, has gone missing, with no word of its current location.
Over 120 people have died in fighting across Yemen, as Houthi fighters took a key strategic district in the southern port city of Aden.
Iran has detained a US cargo ship in the Gulf and directed it to an Iranian port, according to reports by Saudi-owned Al Arabiya television.