European deterrence is running out of time, analysts warn

Europe’s window to build a credible military deterrent against Russian aggression may be closing faster than its leaders are willing to admit. That’s the stark warning emerging from security analysts and defense officials across the continent, as NATO’s eastern flank nations push for urgent action before a potential shift in the geopolitical landscape forces their hand.

A ticking clock on defense spending

The numbers tell a sobering story. Only 23 of NATO’s 32 members currently meet the alliance’s 2% GDP defense spending target, and several major European economies are still years away from reaching it. Germany, despite its historic Zeitenwende pledge, won’t hit consistent 2% spending until 2027 at the earliest. Meanwhile, Russia has restructured its military production to sustain battlefield losses at a rate that surprised Western intelligence assessments.

“The assumption that deterrence is a static condition is dangerous,” said a senior European defense official speaking on background. “It requires constant investment, and right now the investment curve isn’t matching the threat curve.”

The 2028 problem

Security analysts have quietly settled on a rough consensus: the mid-2020s represent a critical window. Russia’s military, though badly degraded in Ukraine, is learning and adapting. Estimates from think tanks including the European Council on Foreign Relations suggest Moscow could reconstitute meaningful offensive capacity within three to five years — potentially by 2028 or 2029.

But Europe’s defense industrial base isn’t scaling fast enough to meet that timeline. Artillery shell production across the EU has ramped up significantly, reaching roughly 1.4 million rounds annually, yet Ukraine alone needs upward of 3 million per year just to sustain current operations. The gap is glaring.

And that’s before considering the political uncertainty hanging over Washington. A second shift in U.S. strategic priorities could leave European capitals with less time and fewer resources than any current planning scenario assumes.

Deterrence isn’t just hardware

Weapons and budgets matter, but they’re not the whole story. Deterrence also depends on credibility — on whether an adversary believes threats will actually be followed through. That’s where Europe faces a different kind of deficit.

Several EU member states have resisted deploying troops to NATO’s eastern flank in numbers that military planners consider meaningful. Political divisions over supporting Ukraine with longer-range weapons have repeatedly slowed decisions that commanders say needed to be made months earlier. Still, Finland and the Baltic states have pushed hard to change the alliance’s posture, and there are signs the broader membership is listening.

What comes next

The NATO summit scheduled for The Hague in June 2025 will likely force a reckoning. Alliance members are expected to debate raising the baseline defense spending target to 3% — a figure that would represent a generational shift in European security policy.

Whether governments can sell that to domestic audiences weary of austerity and inflation is another question entirely. Deterrence may have a deadline. The harder question is whether European democracies can move fast enough to meet it.