John McCain actually said...
I believe in a year to 18 months we can show them success. And I think if we can ask them for the patience during this tough period of time, but we also have to point out that we cannot allow Afghanistan to return to a base for the Taliban to which would then cause al Qaeda to be able to launch attacks on the United States of America.
Context
McCain predicts success in Afghanistan within 18 months and stresses the importance of preventing a Taliban resurgence.
09/23/2009