She explained in South Dakota that sometimes the race can drag on and sometimes, she added, it can change abruptly.

CNN: Clinton's most telling gaffe?

The U.S. partnering strategy of "Shohna ba Shohna" (Shoulder to Shoulder) has abruptly given way to "After You, " as Afghan security forces take the lead -- sometimes reluctantly.

CNN: U.S. withdrawal is 'tough love' for disbelieving Afghans