The American operation to capture Nicolás Maduro was not as unusual as we like to think. But for the first time, we have a US president who doesn't see Europe as an ally - and is just as willing as his predecessors to use force. open.substack.com/pub/thesenti...

Europe's fragmented arms industry is much more pronounced on land than in the air, with companies like Airbus showing what cross-border integration could look like, writes Aurora d'Auria from Finabel in this guest op-ed: open.substack.com/pub/thesenti...

Regardless of what happens in Brussels today, the Ukrainians will fight on. But that doesn't mean the rest of Europe is safe. History is full of aggressors who opened a second front after getting stalemated on the first. They tend eventually to lose. www.the-sentinel.media/p/the-sentin...

The Franco-German squabble over the FCAS fighter jet is a show of weakness just when Europe needs to be projecting strength, argues Martin Leng from the Brussels Institute for Geopolitics (@bigeurope.bsky.social) in this guest op-ed. www.the-sentinel.media/p/op-ed-fcas...

Donald Trump's National Security Strategy has jolted Europeans from their strategic slumber - but perhaps not in the way the US president hoped for. Rather than falling into line as usual, European leaders have started to see the US itself as a destabilising force. open.substack.com/pub/thesenti...

In this guest op-ed, Roland Freudenstein imagines the long-term effects of a bad peace with Russia, making the case for immediate assistance to Ukraine and an accelerated European rearmament. open.substack.com/pub/thesenti...

From the Black Sea to the coast of Senegal, cargo ships linked to Russia are being struck by mysterious explosions. Ukraine has claimed some of the attacks, and denied others. The Sentinel this week takes a look at what it could mean for global shipping. www.the-sentinel.media/p/the-sentin...

The Russia-US peace plan for Ukraine has been a wake-up call for many in Europe. This week in The Sentinel, we look at how it could pave the way for future aggression against a NATO member. www.the-sentinel.media/p/the-sentin...

Welcome to The Sentinel, a new publication tracking Europe's rearmament. We provide a weekly newsletter on European defence and procurement, as well as guest opinion pieces. And we have much more planned for 2026 - give us a follow to receive updates!