Vice President JD Vance and his wife, Usha, meeting with members of the U.S. military at Pituffik Space Base in Greenland last year. The missile defense installation is the only active American base on the island.
It remains to be seen whether the three big nuclear powers are headed into a new arms race, or whether President Trump is trying to spur negotiations on a new accord now that a last Cold War treaty has expired.
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