The attacks would be a major focus of next week’s annual U.N. G.A.

U.S. Secretary of State Mike Pompeo has described the weekend strike that initially halved Saudi oil output as an act of war and has been discussing possible retaliation with Saudi Arabia and other Gulf allies.

“The Saudis were the nation that were attacked. It was on their soil. It was an act of war against them directly,” he told reporters before meeting Saudi Crown Prince Mohammed bin Salman.

Riyadh, which described the assault as a “test of global will”, on Wednesday displayed the remnants of 25 Iranian drones and missiles it said were used in the strike as undeniable evidence of Iranian aggression.

  The United Arab Emirates on Thursday followed its main ally in announcing it was joining a global maritime security coalition that Washington has been trying to build since a series of explosions on oil tankers in Gulf waters in recent months that were also blamed on Tehran.

Pompeo, who arrived in the UAE from Saudi Arabia on Thursday for talks with Abu Dhabi’s crown prince, welcomed the move on Twitter: “Recent events underscore the importance of protecting global commerce and freedom of navigation.”

 Fellow Gulf OPEC producer Kuwait, which said earlier this week it was investigating the detection of a drone over its territory, has put its oil sector on high alert and raised security to the highest level as a precautionary measure.

    Oil prices, which soared following the attack, steadied after Saudi Arabia pledged to restore full production by the end of the month. 

  Pompeo said the attacks would be a major focus of next week’s annual U.N. General Assembly meeting and suggested Riyadh could make its case there.