"There will be further consequences to Russia's action, there's no doubt about it," White House spokesman Gordon Johndroe said. "But Russia has already, I think, begun to suffer some of the consequences of their actions. And their continued reluctance to adhere to the withdrawal plan only further isolates them."

Russian forces invaded Georgia after Georgian troops entered two breakaway regions.

NATO earlier announced Russia was ending all military cooperation with the alliance, but Johndroe said, "I think the -- for all practical purposes -- military-to-military cooperation had really already been suspended with the Russians. We -- NATO -- canceled some exercises. And I can't imagine a circumstance right now that we would engage in military cooperation with the Russians until the situation in Georgia is resolved."

Johndroe said he was not aware of any problem transporting cargo through Russia to Afghanistan, where a U.S.-led coalition is fighting insurgents.

Johndroe made the comments during the daily press briefing in Crawford, Texas, site of the summer White House.