Business Insider reports:

If Donald Trump wins a second term in the White House in November, NATO may fall apart, a recent wargame found.

As a presidential candidate, Trump has threatened to quit NATO unless European allies contribute more, and should he carry it out Europe may decide to go it alone on defense, the game suggests. “A US policy of frustrating NATO has the potential to cause the alliance to collapse, with the EU as a candidate for eventually replacing NATO’s ultimate function — defending Europe from Russia,” wrote Finley Grimble, the British defense expert who designed and ran the game.

The US doesn’t have to withdraw from NATO to imperil the 75-year-old alliance. Technically, the US is barred from leaving NATO after Congress voted in 2023 to prohibit withdrawal without congressional approval.

But the game showed how Trump — the presumptive Republican presidential nominee who said on the campaign trail that he’d encourage Russia to “do whatever the hell they want” with NATO allies who spend too little on their militaries — could undermine NATO simply by doing as little as possible to support the alliance. “What Donald Trump can do is just really hollow out what NATO does,” Grimble told Business Insider. “He doesn’t need to leave NATO to ruin it. He can ruin it from within.” [Continue reading…]