UKRAINE’S TOP MILITARY commander vowed to increase the “scale and depth” of strikes on Russia in remarks made public Sunday, saying Kyiv would not sit idly by while Moscow prolonged its three-year invasion. Diplomatic efforts to end the war have stalled in recent weeks. The last direct meeting between the two sides was almost three weeks ago and no follow-up talks have been scheduled. Russian attacks on Ukraine have killed dozens of people during the interim, including in the Ukrainian capital Kyiv, according to officials. “We will not just sit in defence. Because this brings nothing and eventually leads to...