The UN Secretary General Ban Ki-moon inspected troops at McKee Barracks in Dublin this afternoon on the second day of his Irish visit.
Mr Ban laid a wreath in memory of Irish soldiers who died on service with the UN and met veterans who had served on peacekeeping missions abroad.
The chief of staff, Lieutenant General Dermot Earley, and senior officers were present for the ceremony.
Mr Ban also had discussions with the Minister for Defence Willie O'Dea about Irish participation in peacekeeping operations.
In an interview with the RTÉ's Prime Time, Mr Ban said approval of the Lisbon Treaty is consistent with Ireland's role in the UN.
Mr Ban said: ‘The role of regional organisations like the European Union and the African Union is crucially important in carrying out the major ideals of the United Nations, if you conform and support this Lisbon Treaty according to the wills of your own people then this will be a completely in consistence with the major goals and ideals of the United Nations.'
The UN chief said there were no contradictions regarding neutrality.