Iran

[Undertoad]

It's an analogy. "Just like".

Iran is responsible for supporting the insurgency just like the US is responsible for doing same for the IRA in Northern Ireland.

The US Gov tried successfully and unsuccessfully to stop it.

Private individuals in the US were - and maybe still are - the source of funding for many anti-US middle east terrorist organizations via fake charities, just like the IRA situation. It's no surprise. This is where the money is.