Vixen
Penultimate Amazing
Let's speak in simple terms. Do the western allies (I Jesus hope they're allied) have military options at this point? In the immediate future? In the current theater of war and only there?
Granted that war with Russian forces is not like war with ISIS or Serbia. But how long could they sustain an offensive that was met with sophisticated assaults?
No, it is unlikely other countries will be directly participating in the war, IMV, unless there is a casus belli incident, although they can provide support in the form of arms and transport.