Ukraine’s security service is stepping up pressure on Russia as its Alpha unit reports leading drone warfare results at the front.

BREAKING:Massive Ukrainian drone swarm attack against Russian-occupied Crimea.The drones are striking targets across the fuel-poor peninsula tonight. pic.twitter.com/P1mOezupzv

Volodymyr Zelensky said Russia is moving a significant part of its air defences to protect a handful of prime targets, including Moscow, as Ukraine’s long-range drones hammered…