Oh. Well if we'd rather have people using the least dangerous weapons possible when they go on shooting sprees we'd better hand out legally registered machine guns. Only two murders by them since 1934, one of which was by a police officer. 240,000 of them in the US, you know.
Anyhow yeah. Insurgents use Warsaw Pact military surplus, so yes, they use FMJ. The legality of using FMJ in wartime is determined by the Geneva Convention, not the UN. The UN doesn't have a thing to do with the matter, although most Geneva signatories are in the UN. Terrorists decidely do not abide by the Geneva Convention (surprise surprise) which is why they hide behind civilians, don't wear uniforms and use religious buildings for military purposes. WWII snipers in church towers was a breach of convention and both sides were content enough to punish violators directly with HE tank shells (returning fire from an otherwise protected site is legal under the GC), much to the ruin of countless buildings. However every time there's a sniper in a minaret...
I'm ranting.
Anyhow Afghan insurgents are more dangerous with old bolt action Lee Enfields than with AK-74s. Their AK's are corroded old pieces of junk and most don't realize the lever can even go to semi-automatic. Thus they do not aim, thus they do not hit, thus they do not kill. Quite frankly when 30 soldiers with semi-automatic carbines can fight off 200 guys with fully automatic AK's, PKMs, numerous RPG tubes and pre-infiltrating so close they opened with hand grenades, with the good guys in shallow foxholes with no air support for the first thirty minutes and no crew-served weapons after the first five something is seriously flawed with this irrational fear of fully automatic weapons in the hands of untrained crazies.
I just referenced Wanat in a gun control debate. I knew I didn't read a 271 page Pentagon report for nothing!