As the war in Ukraine drags on into its fourth month, there is still no end in sight. Russian forces launched a major offensive today around Sievierodonetsk in Eastern Ukraine, in an effort to encircle Ukrainian troops. The area surrounding the city is the most easterly point of Ukrainian-held territory in the Donbas. Sievierodonetsk has come under intense artillery and missile fire in recent weeks. Capturing it would be a big prize for Russia in its push to seize control of the Donbas.