KUALA LUMPUR, Malaysia (AP) — Southeast Asian nations held a summit Tuesday with China and six Persian Gulf countries in efforts to expand economic engagement as they grapple with U.S. tariff hikes. Malaysian Prime Minister Anwar Ibrahim says the inaugural summit will open up a new chapter of dialogue and cooperation. He says the 10-member Association of Southeast Asian Nations, GCC and China collectively has a combined GDP of nearly $25 trillion and a market of over 2 billion people, offering vast opportunities for cross-border trade and investment. Chinese Premier Li Qiang says China will work with GCC and ASEAN to bolster economic cooperation. Brunei’s Sultan was missing from the summit as he was hospitalized for fatigue.