Tánaiste and Defence Minister Simon Harris is expected to announce the decision to join Security Action for Europe today.
Ireland is set to sign up to a 150 billion euro EU plan that aims to boost defence.
It will allow the government to secure military equipment faster and at a lower cost.
Tánaiste and Defence Minister Simon Harris is expected to announce the decision to join Security Action for Europe today.
Mark Mellett, former Chief of Staff with the Irish Defence Forces, said it makes economic sense.

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