President Donald Trump and Chinese counterpart Xi Jinping have spoken amid stalled negotiations between their countries over tariffs that have roiled global trade.

Earlier this week, China hit back on Trump’s claims the Asian country was in breach of a new trade agreement, struck last month following talks held in Geneva, Switzerland, countering that the U.S. itself was undermining the deal with new sanctions.

President Donald Trump and Chinese leader Xi Jinping spoke on Thursday at a time when stalled tariff negotiations between their two countries have roiled global trade.