Ukrainian President Petro Poroshenko says Russian forces have been "brought into Ukraine" and has called an emergency meeting of the Security and Defense Council to discuss the crisis.
Russia's War Against Ukraine
Radio Free Europe/Radio Liberty: Ukraine says Russia sends troops (Live Blog)
A video grab taken from the Russian tv channel VGTRK on March 13, 2014 shows Russian paratroopers shooting during their night drill, 150 km outside Russian southern town of Rostov-on-Don.
