What China - a superpower with a very confrontational and combative attitude - can get away with in its own back yard might be quite different from what modest little Norway can or would try to do in the Greenland Sea.
Also, talk to a few volcanologists and marine engineers about trying to build airfields on the tops of barely-above water active volcanoes. (Vs. China is building on shallow, solid, inactive atolls.)
Also, talk to a few volcanologists and marine engineers about trying to build airfields on the tops of barely-above water active volcanoes. (Vs. China is building on shallow, solid, inactive atolls.)