Trump Threatens US Troop Withdrawal From Italy and Spain, Endangering NATO

The Crumbling Shield: What US Troop Withdrawals Indicate for the Future of NATO

The traditional architecture of Western security is facing a period of volatile restructuring. Recent signals from Washington suggest a pivot away from the post-WWII consensus of unconditional mutual defense toward a model of transactional diplomacy. When the United States considers withdrawing forces from key allies like Italy, Spain, and Germany, it isn’t just a logistical shift—it is a signal that the “security umbrella” is now conditional. This shift suggests a future where geopolitical loyalty is weighed against immediate tactical cooperation. The friction over military basing rights—specifically regarding operations in the Middle East—indicates that the US is increasingly willing to leverage its military presence to coerce allies into alignment.

The Rise of Transactional Diplomacy

For decades, NATO operated on the principle of collective defense. However, we are entering an era of pay-to-play security. The current tension stems from a fundamental disagreement: the US views its military presence as a service that requires active reciprocity, even as many European allies view it as a shared strategic necessity. The refusal of Spain to allow the use of naval bases near Cadiz and Italy’s denial of airbase access in Sicily for campaigns against Iran highlights a growing divide. When the US responds by threatening troop withdrawals, it transforms military alliances into bargaining chips.

“Italia tidak memberikan bantuan apa pun kepada kami. Dan Spanyol sangat buruk, benar-benar buruk,” Donald Trump, US President

This trend suggests that future US foreign policy will likely prioritize bilateral “deals” over multilateral treaties. If an ally does not provide specific, tangible support for US-led objectives, the cost may be the removal of the American security guarantee.

European Strategic Autonomy: A Forced Evolution

As the US threatens to reduce its footprint—evidenced by the Pentagon’s decision to withdraw around 5,000 of around 36,000 active military members from Germany—Europe is being forced toward “strategic autonomy.” Here’s no longer a theoretical preference for the European Union; it is becoming a survival mechanism. We can expect the following trends to accelerate:

• Increased Defense Spending: European nations will likely shift budgets away from social programs toward indigenous military production.
• EU-led Rapid Response Forces: To fill the vacuum left by US troops, the EU may develop more robust, independent command structures.
• Diversified Partnerships: Allies may seek security arrangements outside the NATO framework to hedge against US unpredictability.

The risk, however, is fragmentation. Without a central American coordinating force, Europe may struggle to maintain a unified front, potentially leaving individual nations more vulnerable to regional pressures.

The ‘Paper Tiger’ Risk and Global Power Vacuums

The characterization of NATO as a paper tiger reflects a deeper skepticism about the alliance’s current utility. If the US continues to distance itself from the collective, the perceived deterrence value of NATO plummets. When the world’s most powerful military signals that its commitments are flexible, adversaries grab notice. A weakened NATO creates a power vacuum that could be filled by:

1. Regional Hegemons: Countries like Iran or Russia may feel emboldened to test the resolve of European allies who no longer have a guaranteed US shield.
2. Shift toward Asia: The US may continue diverting resources from Europe to the Indo-Pacific to counter China, leaving Europe to manage its own backyard.

Navigating the New Security Landscape

For businesses and policymakers, this instability introduces significant geopolitical risk. Supply chains, energy dependencies, and diplomatic ties are all tied to the stability of the transatlantic alliance. The trend is clear: the era of the “benevolent hegemon” is ending. In its place is a world of competing interests where security is a commodity. To stay resilient, organizations must diversify their geopolitical exposure and prepare for a world where the US military presence is a variable, not a constant. For more analysis on global security shifts, explore our deep dive into the Council on Foreign Relations archives or read our related reports on the evolution of EU defense policy.

Frequently Asked Questions

What happens if the US completely withdraws from NATO?
A total withdrawal would effectively finish NATO as it currently exists. European members would have to create a new security pact or negotiate individual treaties with the US, likely resulting in a significant decrease in overall deterrent power. Why are Spain and Italy resisting US military requests?
These nations often balance their US alliance with regional diplomatic interests. In the case of Iran, domestic political pressure and a desire to avoid being drawn into a larger conflict led to the denial of base access. How does the withdrawal of 5,000 troops from Germany affect security?
While 5,000 is a fraction of the 36,000 total, the move is more symbolic than tactical. It signals a lack of confidence in the partnership and encourages other allies to question the permanence of US protection.