Trump has clearly had enough with his old pal Vladimir Putin over his grueling invasion and is praising Ukraine’s fighting spirit under President Volodymyr Zelenskyy. Going into peace negotiations led by envoy Steve Witkoff, Trump himself had suggested that Ukraine should be ready to part with some of its sovereign territory to reach a deal. We wish we could freeze this current opinion in time and have it now be Trump’s controlling view, but unfortunately, we are all aware that that’s not how it works. It also means, unfortunately but inevitably, that European leaders should treat this as a reprieve, not a final declaration of the United States’ commitment to a joint front against Russian aggression. Their victory will be a victory for everyone’s security.