Analysis: NATO’s Ability to Deter Russia Has Taken a Hit.
For most of its history, NATO’s strength rested less on troop numbers than on credibility—the shared belief that an attack on one would trigger a response from all. That credibility, analysts now warn, has been quietly eroding, not because Europe is unwilling to spend on defense, but because trust inside the alliance has frayed.
European allies and Canada are pouring unprecedented resources into military budgets and into Ukraine’s war effort. Yet deterrence depends on perception, and recent trans-Atlantic infighting has punctured the image of NATO as a unified force under U.S. leadership.
The most damaging rupture came not on the battlefield but in rhetoric. U.S. President Donald Trump’s repeated threats to seize Greenland—a semiautonomous territory of NATO member Denmark—crossed a psychological line for allies. Even without force, the suggestion that one ally might coerce another undermines the alliance’s core principle: that members’ borders are inviolable.
That principle is embedded in Article 5, NATO’s collective-defense clause. While Article 5 does not apply to internal disputes, its power lies in the assumption that allies will never threaten one another in the first place. Once that assumption cracks, so does deterrence.
European unease deepened after Trump’s disparaging remarks about allied troops who fought alongside U.S. forces in Afghanistan. Though partially walked back, the comments reinforced an old fear: that Washington’s commitment is conditional, transactional, and ultimately unpredictable.
From Moscow’s perspective, this uncertainty is an opportunity. Russian Foreign Minister Sergey Lavrov has openly noted the upheaval inside NATO, while Russian state media mock what they describe as Europe’s “impotent rage.” The message is clear: deterrence weakens when resolve looks divided.
To counter U.S. criticism over burden-sharing, NATO allies agreed last year to dramatically raise defense spending, pledging up to 5% of GDP over time when security-related investments are included. NATO Secretary-General Mark Rutte has framed this as proof of the alliance’s renewed strength. But spending, however necessary, cannot substitute for political cohesion.
The danger lies not in an immediate Russian assault, but in gradual erosion. Deterrence fails not all at once, but through probing—cyberattacks, sabotage, intimidation, and gray-zone operations that test whether NATO will respond decisively. European officials already report mysterious drone flights, infrastructure sabotage, and information warfare across the continent.
For Russian President Vladimir Putin, the calculation is straightforward: if NATO members doubt each other, escalation becomes less risky. As EU officials warn, Russia is not deterred by declarations alone, but by the belief that unity will hold under pressure.
The unresolved question is the U.S. military footprint in Europe. American troops remain central to NATO’s deterrence posture, yet uncertainty over future deployments—especially after partial withdrawals near Ukraine—has amplified doubts. Even if U.S. forces do not leave en masse, ambiguity itself weakens the deterrence equation.
NATO is not collapsing. Its military capacity is growing, and its members still share core interests. But credibility is fragile. Once allies begin to wonder whether commitments are real—or whether allies might turn on one another—the deterrence edifice becomes shakier.
For Europe, the lesson is stark. Rearmament is necessary, but it is not enough. Deterrence depends on unity, predictability, and restraint among allies themselves. When those erode, adversaries do not need to attack. They simply wait—and watch.
