I'd suppose they have a very good idea what many will be looking to get up to, and will have a varying degree of suspicion about the rest. Once they are out of the country I expect that they can try to build up a picture and a pattern with perhaps lots of little bits of information, I don't expect they will have very many easy cases at all.

Other countries, the UN, Nato etc... will only get involved once the oil fields are threatened

Read this morning that ISIS as well as getting 40kg of uranium my have got their hands on "chemical weapons" in Iraq. Did they find them when the US and UN couldn't!? Or did the US / UK / puppet government put them there?

I was gobsmacked to hear that they also file online "accounts", apparently they are worth upwards of $2 billions. Their wealth comes from extortion, kidnap, looting etc and their expenditure includes repairs and improvements to infrastructure - something the allies seemed to have overlooked after they bombed the crap out of Iraq

There was no need for any infrastructure reparation.
It was put to much better use in Rumsfeld and Haliburtons pockets.