Were the True IRA supplied by the Russian government?

When he's showing SAMCRO the shipment of AK-47s, Michael McKeavey says that the guns were "fresh from the Kremlin."

In Season 2, AJ Weston goes to pick up guns from Cameron Hayes and finds out that the Russian gun pipeline has dried up.

Jimmy O tells Viktor Putlova that the True IRA has 4 or 5 different arms suppliers. Since the True IRA's arsenal includes American weapons, like SAW machine guns and M4s, we can probably assume that not all of their suppliers are based in Russia. They probably also have suppliers in other European countries and maybe even in the Middle East.

I feel like the show never fully explains the logistics of the True IRA's arms smuggling ring, so I'm trying to piece it together based on the little information that we have.