The Trump presidency might be over (for now), but The New Yorker staff writer Susan Glasser views it as an "active crime scene" because Trump remains influential in current — and perhaps future — US politics.

What's more, some of his most controversial moves are still having ripple effects today. Like threatening to pull out of NATO.

On GZERO World with Ian Bremmer, recorded for the first time in front of a live studio audience, Glasser explains how Trump's disdain for the alliance caused great uncertainty among its other members, even as NATO has become more united than ever before to respond to Russia's war in Ukraine.