TODAY: Kremlin slow to withdraw troops, increasing numbers in South Ossetia; Nato ministers torn over Russia; minister threatens Poland with nuclear strike over US missile defense; Germany presses for artwork to be returned. Nato ministers are having trouble agreeing on Russia, with a tough approach from the US and Britain on one side, and Germany and France, which are urging a more cautious stance on the other. “I don’t know how they are going to isolate us,” commented Sergei Lavrov last week. “My understanding is that each country is supporting Georgia for its own ends and really doesn’t care about Georgia’s population.” “Everyone is to blame.” French President Nicolas Sarkozy writes in the Washington Post today, underlining the importance of a Russian troop withdrawal and promising “grave consequences” if Russia ignored the terms of the ceasefire, which will give the Russian Army the right to patrol in South Ossetia. The Kremlin has announced that Russia will start pulling back today, but has not given a specific time, and many reports indicate that Russia has moved short-range ballistic missiles into South Ossetia and increased military presence in Gori. The BBC has compiled a day-by-day register of the conflict. Georgia’s interior ministry has accused Russia of deliberately starting a fire that threatens to destroy a forest regarded as a national treasure. Georgia says its main east-west train link has been severed. Some human rights activists on the ground said that they were struggling to find even 100 slain Ossetians, according to the Moscow Times.