Here ya go...
The real question we should be asking in Afghanistan is not "Do we need a surge?" but rather "Do we need a third surge?" The number of U.S. forces in Afghanistan in January 2008 was 26,607. Over the next six months, the Bush administration raised the total to 48,250. President Bush described this policy as "the quiet surge," and he made the standard arguments about the need for a counterinsurgency capacity—the troops had to not only fight the Taliban but protect the Afghan population, strengthen and train the Afghan Army and police, and assist in development.
In January 2009, another 3,000 troops, originally ordered by President Bush, went to Afghanistan in the first days of the Obama presidency. In February, responding to a request from the commander in the field, Obama ordered an additional 17,000 troops into the country. In other words, over the past 18 months, troop levels in Afghanistan have almost tripled. An additional 40,000 troops sent in the next few months would mean an almost 400 percent increase in U.S. troops since 2008. (The total surge in Iraq, incidentally, was just over 20,000 troops.) It is not dithering to try to figure out why previous increases have not worked and why we think additional ones would.
Zakaria on a Third Surge in Afghanistan | Newsweek Voices - Fareed Zakaria | Newsweek.com