Will it be enough to dissipate doubt over Ukraine's ability to hold out in a war of attrition with Russia? After months of delay, the US House of Representatives has finally approved a $60 billion military aid package for Kyiv. Overruling the objections of Republican hardliners, Speaker Mike Johnson praised lawmakers who came together to "answer history's call". That said, he also conferred first with Donald Trump.
So with US elections ahead, did the momentum just swing against Russia? Or did we witness a one-off compromise that only pushes back the day when the Western-backed war effort runs out of steam? If US support is so vital, it's because Europe has also been slow to boost promised deliveries of ammunition and air defence systems.
Last year, Europe's share of NATO spending rose to its highest level in a decade. What will 2024 have in store? Beyond just Ukraine, what will the arms race sparked by Vladimir Putin's bid for Kyiv have on the planet as a whole?
Produced by Alessandro Xenos, Guillaume Gougeon and Imen Mellaz.