India, Oct. 25 -- US President Donald Trump on Friday embarked on a tour of Asia that many hope will ease trade tensions in the region and repair damaged ties with China.

Trump, who left Washington on Friday night, is set for a five-day trip to Malaysia, Japan and South Korea, his first to the region and longest journey abroad since taking office in January.

But the most important stop on his itinerary will come at the end of the month, when he is expected to discuss trade, and possibly Taiwan, with Chinese leader Xi Jinping at the Apec summit in South Korea.

From easing tensions with China to addressing South Korea's trade concerns and potentially positioning himself as a peacemaker in Southeast Asia. Here are the five key questions t...