Beijing's official media has unveiled a swath of ambitious international high speed rail plans, one of which envisages connecting China with the continental United States via an undersea tunnel running below the Bering Strait.

State-run news outlets report that Beijing is considering plans to build a high speed rail link in the country’s far north, connecting China to Russia, the United States and Canada. The proposed “China-Russia-Canada-America” line would extend for 13,000 kilometres across the territory of the four countries it traverses, making it over 3,000 kilometres greater…