The Trump administration is taking new steps to tighten ties with Greenland as part of an attempt to exert more influence in the Arctic region and ice out China, the U.S.’s chief global competitor. The U.S. and Greenland are close to finalizing deals on issues ranging from new security and diplomatic cooperation to trade and investment initiatives, a senior diplomatic official said Wednesday. The pending agreements were the subject of high-level discussions between officials from the U.S., Greenland and Denmark…