Ahead of key trade talks in London, here are all the tariffs, counter-tariffs, dealmaking, and dealbreaking between the world’s two biggest economies.

BEIJING/WASHINGTON (Reuters) -U.S. President Donald Trump and Chinese leader Xi Jinping spoke on Thursday in a phone call intended to hash out differences on tariffs that have roiled the global economy, according to China's embassy in Washington.

High-level delegations from the United States and China are meeting in London to try and shore up a fragile truce in a trade dispute that has roiled the global economy