New Delhi, Oct. 24 -- Tensions between the U.S. and China escalated in the weeks leading up to a possible meeting between U.S. President Donald Trump and Chinese President Xi Jinping. In response to recent U.S. restrictions, China plans to expand permitting requirements on rare earth products. Trump has threatened a 100% tariff on Chinese goods. Such is the game between the world's two largest economies, with both sides seeking an upper hand in the highly-watched trade negotiations.

Here's a look at how it unfolded over the past month.

The phone call

Sept. 19

Trump and Xi have a phone call, and Trump announces plans for leaders to meet in South Korea toward the end of October. Trump posts on Truth Social: "I just completed a very prod...