Ukraine war latest: Russia strikes civilian vessels in Black Sea off Bulgaria's coast

INTELLIGENCE SUMMARY

Key developments on Oct. 6: * Drones strike merchant vessels in Black Sea off Bulgaria and Ukraine, killing at least one * Russian losses to Ukrainian drones surge in early October, Madyar says * Despite intensified Russian attacks, 62% of Ukrainians ready to endure war as long as needed, poll finds * Shadow fleet tanker reportedly ablaze near Russian port city Sochi * Klitschko's promise of 50 mobile shelters for Kyiv set to fall far short * Poland to deploy Patriots near Ukrainian borde