Ukraine and Russia have escalated their shadow war of espionage, sabotage, and assassinations, with both countries claiming a growing list of captured agents, intercepted plots, and cross-border attacks.

It is now a place of desolation and death.

Russia pounded Ukraine with hundreds of drones and missiles overnight and Saturday as part of a stepped-up bombing campaign that killed at least six people and wounded dozens, officials said.

At least two people were killed overnight into Saturday as Russia continued to pound Ukraine with hundreds of drones as part of a stepped-up bombing campaign that has further dampened hopes for a brea...