Indians can also supply either directly or through some middlemen. At any rate, I doubt the said chopper was downed by the SAM for the SAM should hit the engine and not the tail rotor, though it cant be ruled out altogether.
If true however, it will only intensify Pakistan's war against these Bharti/Afghan -backed rats and it will last until the last rat is sent to the hell along with their overt and covert supporters.
According to today's news, rats hideouts very near to Afghan borders were bombarded by PAF's jets. It is only a matter of time when their sanctuaries well inside Afghanistan will also be taken out.
I would have assumed that you are too old and senile to know that how the Islamist terrorist network of men, material and finance of terrorism works in the whole world by now.. wonder who made you a TT?. Half of the muslim world, the pakistanis, the azeris, the uzbeks, the somalis, the saudis, the afghans, the saudis, the turks, the chechens, the qataris, the islamic magreb of north africa, the muslims residing in europe and the americas, the uighurs, the iranis, the syrians, the yemenis, the palestinians, the iraqis, the abu sayyafs, the AQ, the HUT, the ISIS, boko, al shabaab, the taliban, the muslim terrorists in thailand, philippines, indonesia etc etc have their inbuilt sources of men material and finances. Most money collections in your mosques and your madrassahs go to some extremist terrorist organization...if you avent figured that out yet...you dont deserve a TT designation. There isnt a muslim country in the world and a country with a sizable muslim population that doesn't have a bunch of terrorist organizations operating - keep blaming the non Muslims and keep dying.