Hillary wants to be president (forget that co-president stuff if she's elected).
Being president means being CIC.
She knows many of the troops don't like or respect her (I'm using the mildest of terms, knowing there is a wide range of attitude out there). She expects that won't be a problem once she is ensconced because she'd have all power to force her "subjects" to do her will. I expect that is one of the duties she'd most enjoy -- ordering the military around, especially the men, and promoting every female she could, whether competent or not.
Everything hrc does is calculated for some political or personal power gain.
Somewhere along the road of her intentions to become president, she decided she had to go hawkish.
That's why she's willing to let the left scathe her on this.
gives us Tom Kratman's vision of what a Hillary presidency would look like (substitute Hillary Clinton for Wilhelmina Rottemeyer and read on).
Kind of chilling, really, but an excellent read.
Click on the picture for more information on the book.