Ukrainian forces are increasing the intensity of long-range drone strikes deep into Russia ahead of Friday's planned meeting between Presidents Trump and Putin.

Russian forces launched an attack on Ukrainian cities on the night of 11-12 August using 48 Shahed-type strike UAVs and various types of decoy drones, as well as four Iskander-M/KN-23 ballistic missiles.

Ukraine claimed a drone strike on a helium plant close to Orenburg, Russia that produces a key component for missiles as well as the space and aviation industries, a Ukrainian official who asked not to be identified told us.