President Joe Biden's top national security aide, Jake Sullivan, met with Chinese leader Xi Jinping last week, along with other top Chinese officials, as Washington and Beijing look to address bilateral tensions. Relations hit one of their lowest points in years in August 2022 after then U.S. House Speaker Nancy Pelosi visited Taiwan and China responded by cutting off bilateral communications on areas ranging from military matters to climate cooperation. But both sides have attempted to pull back from the brink with a series of high-level meetings in the last two years, including between Biden and Xi in November 2023.