China, the adversary. China, the friend? These days, maybe a bit of both. From easing export controls to reportedly blocking the Taiwanese president's plans to travel through the United States, President Donald Trump is raising eyebrows in Washington that he might offer concessions that could hurt U.

Yet analysts say the Chinese leader is likely holding out for concrete deliverables before agreeing to the high-profile meeting. Trump dramatically escalated the trade war with the world's second-largest economy in April, rolling out sweeping new tariffs that prompted China to respond with its own export duties and other measures.