And though Poland was there to hear the Russian Republic admit that they were about to buy VX from Spain I don't think they have the means to really create anything to effectively counter-act the super-gas, or the means and resources. China had brief access to Seattle - where the gas was first deployed - to collect what little remained of the chemical agent. But they got that because of their brief diplomatic relations to America. Like-wise, VX doesn't need to be breathed to kill, it can get through uniforms and clothes and get absorbed through the skin, and it doesn't take much.

Likewise I don't think Poland would have enough men to mount an invasion with the intent to fully annex any regions any time soon given the amount of military missions across the Caucus or Anatolia. The Polish themselves had to withdraw their physical army from Moscow because it was too much of a stress on them, and they replaced them with a PMC unit which might as well be a faction all their own in the politics of the Russian Republic.

Similarly, the Mafiya is a pretty asymmetric foe.