India, Sept. 5 -- Russian attacks overnight killed at least three people in Ukraine, local officials said Friday, after President Volodymyr Zelenskyy said US envoys are expected to visit Kyiv within the coming days as part of renewed diplomatic efforts to end the war.

The air war between Russia and Ukraine has intensified as the conflict stretches into its fifth year following Moscow's invasion of its neighbour. Russian forces have relentlessly struck civilian areas. Previously, these attacks occurred mostly at night -- but now they are happening during the day as well. The front line in eastern and southern Ukraine remains largely deadlocked.

Though US efforts to negotiate a settlement have yet to produce a path to peace, in his nightl...