World leaders will push for the rapid completion of a massive, China-backed trade deal that excludes the US at a summit this week, in a rebuke to rising protectionism and Donald Trump’s “America First” agenda.

China, Japan, India and other Asia-Pacific countries could announce a broad agreement on the Regional Comprehensive Economic Partnership (RCEP), which covers half the world’s population, on the sidelines of the annual gathering.

Not only is the US absent from the deal, but Trump is skipping the summit in Singapore.

Trump launched his unilateralist trade policy with a bang shortly after coming to office by withdrawing from the Trans-Pacific Partnership, a deal spearheaded by predecessor Barack Obama that aimed to bind fast-growing Asian powers into an American-backed order to counter China.

His approach has left the floor open for Beijing to promote a rival pact it favours, the 16-member RCEP, a free trade deal which also aims to cut tariffs and integrate markets, but gives weaker protection in areas including employment and the environment.