On 4 April 2026, The Irish Times reported that four of the State's most consequential bodies — the Department of Communications, the Department of Defence, ESB and EirGrid — had used submissions to Ireland's national maritime security consultation to deliver an unusually blunt warning. The Department of Communications said subsea telecom cables carry more than 99 per cent of Ireland's data, and that "the worst-case scenario would involve multiple cable cuts that disconnect the entire island of Ireland from the global internet." The departments called for space-based surveillance, deeper EU maritime cooperation, and stronger collaboration with NATO and like-minded partners.
The warning is not alarmist. It is, however, only half a strategy.
The threat is real, and the gaps are real
It is worth stating the security case at full strength, because it is strong. Ireland sits at one of the densest junctions of global connectivity. A 2025 CSIS case study found the country is served by 14 subsea cables, that roughly three-quarters of the Northern Hemisphere's cables pass near or through Irish waters, and that the traffic riding those lines underpins around $10 trillion in daily financial transactions globally. Taoiseach Micheál Martin put the stakes plainly at the strategy's launch: "If anything happened to the cables ... we wouldn't have an economy in ten days."
The reconnaissance is documented, not speculative. CSIS catalogues a Russian-linked pattern stretching from 2020 through a March 2025 anchor-dropping incident, and Defence Minister Helen McEntee told a subsea-cable symposium in Valentia on 23 April 2026 that the Russian vessel Yantar — widely assessed as an intelligence ship — was tracked within 60km of Ireland's east coast in November 2024. Against that, Ireland's Naval Service had been reduced to two active ships, and defence spending sits near 0.2 per cent of GDP, a fraction of comparable European states. A determined actor would not find Irish waters well guarded.
So the instinct to reach for surveillance satellites and allied muscle is understandable. The problem is that it answers the wrong question first.
You cannot patrol a cut away
No navy on earth — not the United States', not the United Kingdom's — patrols its entire exclusive economic zone densely enough to stop a single dragged anchor or a diver with a charge. The Baltic states, far better resourced and far more militarised than Ireland, have suffered repeated cable damage despite intense monitoring. Detection and deterrence matter, but they degrade gracefully at best. The variable Ireland can actually control is what happens after a line goes down.
That is a redundancy question, and it is overwhelmingly a regulatory and investment one rather than a military one. The reason a worst-case cut could "disconnect the entire island" is not that Ireland has too few frigates; it is that too much traffic concentrates on too few routes with too little spare capacity and too slow a path to building more. CSIS notes at least four new cable projects are due to land in Ireland by 2027 — but it also flags the binding constraint: governance is fragmented across agencies with no single body owning subsea-cable policy, and permitting is slow. Redundancy is the surest insurance against a cut, and Ireland's own rules are the main thing standing between it and more of it.
The proportionate levers already exist
Here the news is better than the submissions imply. Ireland does not have to militarise alone or compromise its neutrality to harden its connectivity. The European Commission on 5 February 2026 committed €347 million to submarine-cable security under the Connecting Europe Facility, alongside a Cable Security Toolbox and a list of Cable Projects of European Interest — including funding aimed squarely at repair capacity, the part of the system that determines how fast a severed island reconnects. On 11 March 2026, Ireland endorsed the New York Joint Statement on undersea-cable resilience alongside the US, EU, UK, France and Germany, and its first National Maritime Security Strategy — launched by McEntee on 25 February 2026 — runs for five years and explicitly commits to coordinating with the private operators who actually own the cables.
These are the proportionate instruments: cost-shared, collaborative, focused on resilience and repair rather than on policing the high seas. They strengthen the open internet by adding capacity, and they fit a neutral state far better than unilateral hard power.
The risk worth naming
The danger now is overcorrection. The same connectivity that makes Ireland a target is what made it a European data hub — 82 data centres and counting, per CSIS. A security framing that slows cable landings, layers on permitting friction, or treats every new project as a threat surface would damage the very resilience it claims to protect. Fewer, slower cables are more fragile, not less. Ireland's instinct should be to build redundancy faster, consolidate the scattered governance the strategy admits exists, and lean on the EU and allied frameworks already funded — not to mistake surveillance for security or to let a real threat become a reason to throttle the open internet it is meant to defend.