Earlier estimates provided in recent months put that figure at up to 20%, already a sharp increase from last year, when jet-powered drones were reported only rarely. In early June, Gen. Oleksandr Syrskyi,

By Yuliia Dysa and Daniel Flynn KYIV, Aug 13 (Reuters) - Ukraine has sent Russia an offer suggesting they both halt attacks on civilian targets in the Black Sea, a source said, as both countries warned about threats to global food supplies following weeks of intensified strikes on vessels and ports.