Getting tough on European allies to spend more on their own defense is plausible and even necessary—decades of US security provision 'infantilized' Europe (per Irving Kristol in 1983 and Alex Younger), letting them fund welfare over defense at American taxpayers' expense—but threatening to invade or annex allied territory (e.g., Greenland) is unnecessary since basing arrangements like missile defense in Poland and Romania already serve US security without annexation.