Gate News reports that on March 15, most Gulf region stock markets declined slightly on Sunday. The Saudi benchmark index (main stock index) fell by 0.8%, with Riyad Bank down 0.9% and Saudi National Bank, the largest lending institution in Saudi Arabia, down 1.9%. The Qatar index declined by 0.5%, with Qatar National Bank, the region’s largest asset lender, down 1.3%. Bahrain’s benchmark index dropped by 0.3%, and Oman’s benchmark index fell by 0.4%. Currently, the conflict between the US, Iran, and Israel has entered its third week. U.S. President Trump threatened to further strike Iran’s Halek Island oil export hub, while Iran vowed to strengthen its response. Additionally, three sources familiar with the matter said the Trump administration rejected diplomatic efforts by Middle Eastern allies to end the US-Israel-Iran conflict. Trump also called on allies to deploy warships to help secure the Strait of Hormuz, which is vital to global energy supplies.