TBILISI, Georgia (AP) — Georgian officials charged today that Russian tanks had rolled into a strategic city and seized a military base inside Georgia in violation of a freshly brokered truce intended to end a conflict that had bloodied and battered the U.S. ally and uprooted tens of thousands of people.

The accusation came less than 12 hours after Georgia’s president said he accepted a cease-fire plan brokered by France. Russian President Dmitry Medvedev said that Russia was halting military action because Georgia had paid enough for its attack on South Ossetia, a separatist region along the Russian border with close ties to Moscow.

Still, Medvedev ordered the Russian defense minister at a televised Kremlin meeting to destroy any resistance or aggressive actions.

Georgian President Mikhail Saakashvili had gambled on a surprise attack late Thursday to regain control over his country’s pro-Russian breakaway province of South Ossetia. In the newest development, Georgia’s Security Council chief Alexander Lomaia said that Russia had moved 50 tanks into Gori, a strategic town 15 miles from the border with South Ossetia, violating the new accord. The RIA-Novosti news agency cited the Russian Defense Ministry as denying the claim.