Russian forces are poised to finally capture Pokrovsk, a symbolically important victory with a heavy cost

Russian forces appear to be on the brink of finally seizing the eastern Ukrainian city of Pokrovsk, a symbolic victory that President Vladimir Putin has been pursuing for 21 months at an increasingly heavy cost.

​ Russian forces appear to be on the brink of finally seizing the eastern Ukrainian city of Pokrovsk, a symbolic victory that President Vladimir Putin has been pursuing for 21 months at an increasingly heavy cost. Read More Breaking News, Latest News and Videos | CNN