What? The Brits didn't occupy Ireland?
It's kind of hard to run "covert ops" without a base of operations in the mideast when you are America. And when you do you get criticized for it anyway.
No Britain didn't 'occupy' Ireland.
In 1066 the Normans invaded England, in 1169 they invaded Ireland bringing them under the same rule, the invader Normans. Theres been wars between the ruling houses of England and the Irish for centuries. But no we've never actually invaded Ireland as such. The Northern Irish chose to stay as part of the UK while Eire went independant as a republic.
The CIA seems to have managed it's operations all around the world so far.