The revamp of Ireland’s defence
See GlobalData’s recently published ‘Ireland Defense Market Data 2026-2035‘ for more information.
Since its inception as an independent state, Ireland has maintained a policy of neutrality. Initial considerations to join Nato during its founding in 1949 stalled on the issue of entering a formal alliance with the UK while the latter still maintained control over Northern Ireland. Nato membership remains highly unpopular among the Irish public, and the country instead participates in the alliance’s Partnership for Peace (PfP) program.
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Given this policy of neutrality, the capabilities of the Irish Defence Forces have been modest. The dominant service branch is the Irish Army, with its main manoeuvre elements being light infantry that are trained to fulfil a mechanised infantry role mounted on the Piranha IIIH armoured personnel carrier. However, the size of the Piranha III fleet means that little more than one of the seven infantry battalions can be mounted on the vehicle at any one time, and the vehicles are largely used for overseas UN peacekeeping missions. Within Ireland itself, the infantry predominantly carries out an internal security role given Ireland’s benign relations with its neighbours. The most potent asset the army fields is the Medium Reconnaissance variant of the Piranha IIIH. Indirect fires capabilities are similarly modest, with this primarily vested in the 105mm L118 towed light gun in addition to the M87 120mm mortar.
In the air domain, the Irish Air Corps lacks the ability to both detect aircraft with their transponders switched off and carry out interception missions of such aircraft. State visits by foreign dignitaries in recent years saw patrols carried out by the PC-9M turboprop, which itself is only armed with machine guns and unguided rockets, an armament completely unsuited to counter-air interception. Meanwhile, maritime patrol capabilities have recently seen an improvement with the C295M, while they offer superior surveillance capability with better avionics and a more powerful engine than the fleet of CN-235 they were replacing, like their successors they remain unarmed.
In the maritime domain, the Irish Naval Service (INS) operates a small fleet of patrol vessels, the largest of which are the four Samuel Beckett-class offshore patrol vessels. The INS has been severely impacted by personnel shortages in recent years, with contractors relied upon to crew vessels. Ireland’s military deficiencies were made apparent during the state visit made by Ukrainian President Volodymyr Zelenskyy in December 2025. Several drones, believed by the Irish Government to be of Russian origin, were observed by the Irish naval vessel LÉ William Butler Yeats near Howth. The crew is believed to have considered engaging the drones with the vessel’s 20mm anti-aircraft gun, but this was assessed to be ineffective.
Due to Ireland’s current military deficiencies, the country de facto relies on the UK for national defence. The Royal Navy would be required to deter an incursion by hostile surface vessels and submarines. Similarly, the Royal Air Force is relied upon for interception missions against suspicious aircraft.
The Irish Government has recognised the lack of capabilities of the country’s defence forces, having formulated the Detailed Action Plan, which aims to increase defence spending to €1.5bn ($1.76bn) and increase the total number of personnel to 11,500 by 2028. The suspected Russian drone incursion in December 2025 has catalysed further defence investment, with defense minister Helen McEntee announcing a €1.7bn ($1.9bn) five-year spending plan. This further expands the potential for firms to enter Ireland’s defence market. All service branches of the defense forces are to see significant procurements. In February 2026, this was followed with the announcement that a new maritime strategy would be formulated, in recognition that “Russia is a threat to everybody” and noting the vulnerability of subsea cables in Ireland’s territorial waters.
The Irish Air Corps is to be renamed the Irish Air Force. As outlined in our Analyst Briefing discussing potential Irish fighter aircraft procurement, Ireland is to procure a primary radar system, and at the time of writing, it is a significant likelihood that a squadron of between eight to 12 fighter aircraft will be procured. Together, these will allow the Irish Air Force to identify and intercept potentially hostile aircraft, removing the need for assistance from RAF Typhoons.
The Irish Naval Service is to be renamed the Irish Navy, with its number of surface vessels expanding from eight to 12, which will expand operational bandwidth and allow for patrols of Irish territorial waters and participation in EU naval missions simultaneously. Most importantly, the procurement of a “Multirole Combat Vessel” is being considered. This would provide the Irish Navy with its own, albeit small-scale ASW [anti-submarine warfare] capabilities and act as a deterrent to Russian submarine activity in Ireland’s territorial waters. This, in turn, would free up Royal Navy assets for patrols elsewhere in the North Atlantic.
The Irish Army is to see a replacement of its fleet of Piranha IIIH armoured personnel carriers and RG-32 patrol vehicles, with the former completing a mid-life upgrade at the end of 2025. The Armored Fleet Replacement Project, valued between €600m and €800m ($700m to $935m), will see 100 vehicles to replace both. At the time of writing, it is believed that the KNDS SCORPION series of vehicles, consisting of the Griffon armoured personnel carrier, the Jaguar armoured reconnaissance vehicle, and the Serval light multipurpose vehicle, is the leading contender in the Armored Fleet Replacement Project. The SCORPION series would be of particular interest to Ireland as three vehicles would be procured in one deal, in addition to readily available spare parts, allowing for cost-effective fleet maintenance. The Jaguar, especially, would represent a significant increase in the lethality of the Irish Army armored cavalry capability, restoring it to levels seen before the retirement of the FV101 Scorpion in 2017.
Ultimately, while it is almost certain that Ireland will never join Nato fully, the country remains “Nato-adjacent”, and interoperability with Nato remains important. Dublin expects that the Irish Defence Forces will always operate as part of UN or EU missions, largely with other EU member states who themselves are predominantly members of Nato. To that end, all major procurements for the Irish Defence Forces will be produced by companies of European Nato members. For these companies, Ireland represents a transparent allied market with modest requirements that allow for a long-term presence to be established.