The commander of international forces in Afghanistan is keeping a wary eye on budget battles in Congress these days.

General David Petraeus says failure to pass a budget this year has noUSA/t yet complicated the war effort against al Qaeda.

But there’s a point at which it will begin to have an impact, he told an event  sponsored by the National Journal on Friday at the Newseum.

The U.S. Air Force has urgently sought additional Reaper hunter-killer drones for use in Afghanistan, Petraeus said. Failure to pass President Barack Obama’s budget could block that.

The president also asked for an increase in funding to train, equip and sustain the Afghan military as it prepares to assume the lead role in providing security for the country. That’s a necessary step before U.S. forces can hand over control and return home.