The capture of Kyiv was planned to be carried out by diverting Ukrainian forces in other directions.The Ukrainians were also confused by the interceptions of conversations of the Russian military in Gomel, Belarus: they themselves knew nothing about the plans, had no idea that they were going to war, and were not ready for major combat operations.When the speed of the invasion began to lag noticeably behind the plan, the situation of the Russian troops gradually began to deteriorate, while Ukraine mobilized.Russia’s other major mistake was underestimating the number of Ukrainians with combat experience and Ukraine’s ability to mobilize.Since March 2014, Ukraine has focused on restoring its artillery capabilities, during which time it has managed to form 5 artillery brigades and a separate artillery regiment + 1 more artillery brigade and 1 regiment of the Ukrainian Navy."