AFGHANISTAN, April 12 - Russia continued offensive operations in eastern Ukraine on a limited basis as it worked to reconstitute forces withdrawn from the Battle of Kyiv and to establish necessary logistical bases for increased offensive operations in the Donbas area. Russian forces withdrawn from the Kyiv region have not yet been reintroduced into Ukraine to fight. The Russian military has continued to conduct small-scale limited offensive operations on the Izyum and Severodonetsk axes and has not yet gone over to a better-resourced or broader offensive campaign. The Battle of Mariupol continues even as Ukrainian officials accuse Russia of using chemical weapons on Mariupol’s defenders.