The potential for Russian aggression poses significant risks to NATO's unity and credibility. If NATO fails to respond decisively to a provocation, it could embolden Russia and undermine the alliance's collective security framework. This could lead to increased insecurity in Europe and weaken support for Ukraine, which relies heavily on Western backing in its conflict with Russia. Additionally, the ongoing rearmament efforts in Europe, while promising, may not be completed in time to counter immediate threats, leaving the continent vulnerable.