China’s push to master Arctic opens alarming shortcut to U.S.

Wall Street Journal: Chinese research submarines for the first time traveled thousands of feet beneath the Arctic ice this summer, a technical feat with chilling military and commercial implications for America and its allies.

U.S. national-security officials say the Chinese undersea expeditions offer fresh evidence of a growing threat from China in the Arctic region, known as the High North. This year, Chinese military and research vessels have operated around Alaska’s Arctic waters in unprecedented numbers, the Dept. of Homeland Security reported in November…