If I were in the military of the USA and was told to attack Canada, I would defect to Canada or just go home.
What Putin is doing to the Ukraine is no different and I must say I am not an advocate of the Ukraine nor her foe. I hope the totally corrupt nation of Ukraine wins. If Ukraine wins, then what happens? It could be very good or very bad.
Domino theory. Another big win for neo-marxist globohomo.