Trump's week in Asia: BBC correspondents on the wins and potential losses

US President Donald Trump is arriving in Asia for a whirlwind week of diplomacy, which includes a much-anticipated meeting with his Chinese counterpart, Xi Jinping. Top of the agenda between the two will be trade - an area where tensions between the world's two biggest economies have once again been ramping up. Trump lands in the Malaysian capital, Kuala Lumpur, as a summit for the Association of Southeast Asian Nations, or Asean, begins on Sunday. He will then visit Japan and finally South Korea, where the White House says he will meet Xi. So what are the wins Trump and other leaders are hoping for, and what are the pitfalls?