The Kremlin said on Wednesday that countries involved in peace talks around Ukraine still needed to narrow their differences and that there were "a lot of nuances" that needed to be worked out before any deal could be reached.

The Kremlin made its comments after talks between the U.S., Ukraine and European officials to discuss ending the fighting in Ukraine faltered on Wednesday as U.S. Secretary of State Marco Rubio abruptly cancelled his trip to London and negotiations were downgraded.

KYIV, Ukraine (AP) — Russian drones battered the Ukrainian port city of Odesa and glide bombs hit Zaporizhzhia, local authorities said Tuesday, as the Kremlin again warned that negotiators are unlikely to obtain a swift breakthrough in peace talks on the war.