What did the Amsterdam Treaty commit Ireland to?

Article J.7 of the Treaty includes:

1. The common foreign and security policy shall include all questions relating to the security of the Union, including the progressive framing of a common defence policy, in accordance with the second subparagraph, which might lead to a common defence, should the European Council so decide . . .

The policy of the Union in accordance with this Article shall not prejudice the specific character of the security and defence policy of certain Member States and shall respect the obligations of certain Member States which see their common defence realised in Nato . . .

2. Questions referred to in this Article shall include humanitarian and rescue tasks, peacekeeping tasks, and tasks of combat forces in crisis management, including peacemaking.*

* known collectively as Petersberg Tasks