Defence (Amendment) (No. 2) Act 1960
Ireland passed the Defence (Amendment) (No. 2) Act 1960, which allowed a contingent of up to 12 Defence Forces members to be dispatched abroad without a Dáil resolution. Any larger deployment required parliamentary approval.
Small specialist teams could deploy quickly while larger missions needed a public vote.
The 12-member threshold remained law for 66 years, becoming a cornerstone of the triple-lock system that also required UN and government approval.
The 2026 bill raises this threshold to 50 and removes the UN mandate element, replacing the 1960 framework entirely.
