Europe's reluctance to join Iran war puts NATO at risk

Trump has made his irritation with European partners clear and is now threatening to pull the US out of the alliance altogether

Europe's reluctance to join Iran war puts NATO at risk

With President Donald Trump once again threatening to withdraw the US from NATO, European leaders are being forced to consider whether the alliance could survive without American involvement.

Since the alliance’s creation at the end of the Second World War, the US has been the dominant partner—a trend that has accelerated since the end of the Cold War, when European nations cashed in on the so-called “peace dividend”. Believing the era of major state-on-state conflict to be at an end following the collapse of the Soviet Union, European nations drastically cut defence spending in favour of increased funding for welfare and health care.

This meant that, while there was a significant decline in their military capabilities, the US—which continued to maintain defence spending at levels similar to those during the Cold War—became the dominant force in the alliance, as Europe opted to outsource its security requirements to the US.

While, in some respects, it suited US policymakers to enjoy military dominance, as it helped to boost the lucrative transatlantic trade alliance, in recent years, there has been growing discontent in Washington over Europe's failure to take its own defence needs seriously.

The issue, moreover, has increasingly become a bone of contention between the US and its European allies since Trump first took office, and he has publicly lambasted European leaders for not paying what he considers their fair share towards NATO's upkeep.

And after Europe’s lukewarm response to Trump’s decision to wage war on Iran—with a number of European countries, such as the UK, Spain and Italy, refusing to allow the US military to conduct offensive operations against Iran from their bases—these tensions have only escalated. European leaders have expressed dismay at not being consulted by the US before launching the war and have been reluctant to respond to Trump’s call for Europe to help open the Strait of Hormuz after Iran effectively closed it in response to being attacked by Washington.

In an interview with The Telegraph, Trump said that he is considering pulling the US out of NATO in response to Europe's refusal to join the war on Iran. Asked if he would reconsider US membership in NATO, Trump replied: “Oh yes, I would say that it's beyond reconsideration. I was never swayed by NATO. I always knew it was a paper tiger, and Putin knows that too, by the way.”

Trump's threat to pull the US out of NATO presents the biggest challenge that the alliance has faced since its formation in 1949

Biggest challenge

Trump's comments certainly present NATO with one of the biggest challenges it has faced since its formation in 1949, as it threatens the future of an alliance that ultimately defeated the Soviet Union during the Cold War and has subsequently been involved in more modern conflicts in Bosnia, Kosovo and Afghanistan.

US politicians will question whether Trump even has the authority to withdraw the US from NATO, as membership is sanctioned by Congress. It would require a two-thirds majority if a vote were held on leaving the alliance, which most observers believe isn't possible.

But what Trump can do as Commander-in-Chief is reduce US involvement in the alliance—a move that would severely impinge on NATO's effectiveness, as it relies on America for many key military capabilities, from air-to-air surveillance to missile defence.

One important casualty of any move by Trump to downgrade Washington's commitment to NATO would be an erosion of the Article 5 commitment, which states that "an armed attack against one or more of them in Europe or North America shall be considered an attack against them all".

Various members of the Trump administration, such as Defence Secretary Pete Hegseth, have already questioned whether the US would come to Europe's defence in the event of, say, Russia opening a new front against a NATO member state. Certainly, the prospect of having to fight a war without American support has forced European leaders to seriously consider improving their own capabilities to the point where they could conduct military operations without American involvement.

The prospect of having to fight a war without American support has forced European leaders to seriously consider improving their own capabilities

Glaring imbalance

The US currently accounts for approximately 60% of NATO's total defence spending and provides the bulk of its firepower—particularly at sea and in the air, as well as in nuclear deterrence. Given how reliant Europe has become on the US for defence, it could be a while before Europe is able to confront potential aggressors such as Russia.

While the US is undoubtedly the dominant military power within NATO, it benefits from its membership in various ways. Member states in Europe, for example, provide bases for American early-warning systems, missile systems and warplanes, while the UK and Norway provide key intelligence on Russia's sea-borne nuclear missile submarines operating out of the Kola peninsula and the Barents Sea.

The need to address this glaring imbalance in military capabilities has been raised by several prominent European military commanders, including General Sir Nick Carter, the former head of the UK's Armed Forces, who has warned that Europe must become a military superpower in its own right if it is to survive without the US.

In a report delivered to a major security summit in Germany earlier this year, Sir Nick said Europe "should be a superpower, economically, politically and militarily" to defend itself in the "evolving world order", adding that it could no longer afford to rely on the US "by default" and calling for a rapid increase in defence spending.

There are already encouraging signs that European leaders are prepared to be more committed, with European NATO chiefs announcing a new Arctic mission to address Trump's concerns about security in the region. The UK plans to send an additional 1,000 troops to Norway as part of the operation. European countries will hope that these gestures will help them stay in Trump's good graces and keep the US involved in NATO.

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