Nato secretary-general Mark Rutte warned that a Russian victory in Ukraine would undermine Nato's credibility, costing trillions to restore. Speaking at Davos, Rutte emphasized the need to increase western support for Ukraine, rejecting the notion of scaling back aid. He cautioned against a rushed peace deal with Russia, warning it could embolden Putin and his allies. Polish foreign minister Radek Sikorski echoed concerns, urging Putin be held accountable as a war criminal.