Disagree.
I think they will quit very easy. Soldiers are normal folk too. Most will have joined the army just to avoid starvation. I dont believe for a moment they are as brainwashed as our media would have us believe.
They will collapse just like the Iraqi armed forces did.
Its hard to know what level of brainwashing is common place amongst the masses - if they've been brought up from childhood to believe that their very existance and way of life is under threat from the US then many of them will not only believe it but actively subscribe to it, they simply won't know any different.