It’s not since you’ll still need to get people into the country and quite likely people with less field experience.

Not to mention that to pull anything like this off you already need to have an extensive network of assets in place.

There are plenty of local resources you’ll be able to use ranging from local opposition groups to hired criminals from Iran and the Caspian region heck getting some offshoot of the Syrian opposition to lend a hand after Iran helped Assad isn’t out of the realm of possibility either.

You assume this was some SEAL Team Six operation, the fact that as many as 12 people opened fire indicates it quite likely wasn’t and the assets who performed the assault itself were quite likely less trained and much more expendable.