Russian forces may be attempting to use the threat of an advance on Kharkiv to stretch Ukrainian forces along a wider front line in eastern Ukraine before the start of their summer offensive, according to the Institute for the Study of War (ISW). Commander-in-chief of the Armed Forces of Ukraine, Oleksandr Syrskyi, announced yesterday, April 28, that Russia is accumulating troops in the Kharkiv direction and conducting regrouping. Ukraine, in turn, is strengthening the most dangerous areas in this direction. The Institute notes that Syrskyi’s statement does not indicate the inevitability of a …