The Bush administration could begin drawing troops out of Iraq by the end of the year, Robert Gates, the defence secretary, said on Sunday. Mr Gates insisted, however, that the so-called surge in US deployment this year had been effective. Mr Gates said on NBC’s Meet the Press there was a possibility that the US could begin to withdraw forces by the end of this year. But he also made clear that any decision would depend on the outcome of a progress report by General David Petraeus, the senior military commander in Iraq, and Ryan Crocker, the US ambassador, which...