In the interview, Clinton expressed "respect" for McChrystal's assessment that the United States would likely lose the war in Afghanistan within a year without more US forces.
"But I can only tell you there are other assessments from very expert military analysts who have worked in counter-insurgencies that are the exact opposite," she said.
Notice that Clinton didn't cite any specific experts; it's because she can't.
Any intelligent analysis of the situation on the ground in Afghanistan shows that the US and NATO are losing, big-time. We are just barely holding on to Kabul.
The rest of the country is pretty firmly in the hands of the Taliban.
Our options here are very limited; we can either leave, and negotiate on the oil pipelines to control Eurasian oil with whatever government is left standing, or kill every Afghan still breathing to accomplish that goal.
There is no middle ground here toward accomplishing that objective. If Clinton were the least bit intellectually honest, she would understand that.