Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Hamburg, Germany (CNN) President Donald Trump has long said China is the lynchpin to solving North Korea's saber rattling with missile tests. But his tact with the Asian superpower has run the gamut: He has thanked the Chinese for their support, argued they aren't helping defuse the situation and then written them off as willing partners -- all in the span of a few months. On Saturday here in Germany for the G20, Trump urged action on North Korea as he met with Chinese President Xi Jinping. "Something has to be done about it," Trump argued ominously during the brief public portion of his meeting with Xi.The President sat down with Chinese President Xi Jinping on Saturday afternoonThe United States and China are currently split on the best way to deal with North Korean leader Kim Jong Un 
 Question:"_ has taken significant action, and then ... they've paused and didn't take additional action."

China