In the midst of two active and potentially world-changing conflicts in the Middle East and Europe, the U.S. is hoping to find at least a small measure of common ground with China as China's top diplomat visits Washington this week. Over three days of meetings that begin Thursday evening, top Biden administration officials, including possibly the president himself, will press Chinese Foreign Minister Wang Yi on the importance of China stepping up its role on the world stage if it wants to be considered a responsible major international player. Secretary of State Antony Blinken and Biden's national security adviser, Jake…