KIEV, Ukraine (AP) -- A Ukrainian news agency says a military base in the Crimean port city of Sevastopol is under siege by Russians. No shots have been fired.
The report, citing a duty officer and Ukraine's defense ministry, said a Russian military truck broke down the gates and entered the base, where about 100 Ukrainian troops are stationed.
Interfax, quoting the Ukrainian Defense Ministry, said there were about 20 "attackers," who threw stun grenades.
The Ukrainians barricaded themselves inside one of their barracks, and their commander began negotiations, Interfax said.