International military observers from the Organisation for Security and Cooperation in Europe said "warning shots" were fired as the mission turned back trying to enter Crimea.
Military assessment visitors from OSCE States turned back from Crimea checkpoint at Armyans'k. Warning shots fired. Everyone safe. #Ukraine
The OSCE observers have been unable to enter Ukraine's Crimea peninsula for the second day in a row.
Eastern Ukraine's Babuchkas, older women who have worked hard to raise families, are said to be the real power in these parts of the world.
Ukranian military commander told ITV News the Russian men "have come to protect us. So why are their guns pointing towards our base?"
Fear is shaping events in Crimea, the multi-ethnic peninsula that finds itself at the heart of a tussle between great powers.