The North Atlantic Treaty Organization's upcoming discussion on its long-term strategy will proceed without several of its most influential members. The Trump administration is omitting the UK, France and the Baltic states from a meeting in Poland next month, according to six diplomats cited by Politico. The decision follows a threat by the U.S. government to utilize a "naughty and nice list" to isolate allies that conflict with the president's policy goals.

The excluded nations include Europe's only two nuclear-armed states and the three countries seen as most vulnerable to Russian aggression. The session is intended to determine the trajectory of the alliance's future, though the administration has not detailed the specific priorities that led to the ban.