Vietnam's Prime Minister Nguyen Xuan Phuc chairs the 4th Regional Comprehensive Economic Partnership Summit as part of the 37th ASEAN Summit in Hanoi, Vietnam November 15, 2020. REUTERS/Kham
Fifteen Asia-Pacific economies formed the world’s largest free-trade bloc on Sunday, a China-backed deal that excludes the United States, which had left a rival Asia-Pacific grouping under President Donald Trump.