The European security force represents a crucial step toward strategic autonomy and demonstrates Europe's commitment to Ukraine's long-term security, while the modest troop numbers and focused mandate make it a realistic and sustainable option for preventing future Russian aggression — and also standing up to the whims of the US.
The proposed force is inadequate for deterring Russian aggression and could potentially escalate tensions with Moscow because Europe's limited military capabilities make it impossible to sustain such a mission without substantial US involvement. This shows that, despite the US urging Europe to take on a more robust security posture, there is nothing more valuable than a transatlantic alliance.