A replica of Denmark in Minecraft, which was reported here, has been vandalised with some areas blown up and flags of the United States created.
Only a small area was destroyed and the flags appeared near the starting point, which points to just attention seeking as opposed to a virtual liberation attempt. Other players have cleaned up the damage, replacing it with green grass and flowers.
This looks to be a false flag operation carried out by the Russians in retaliation of US sanctions over Crimea. My bet is they are trying to disrupt US and Danish relations to distract them. Meanwhile the Russians are busy emptying the caverns of precious lapis lazuli, redstone, emerald, gold and diamond ores. Its a Russian invasion without a single shot fired.