New Delhi, Feb. 13 -- Russia launched a barrage of ballistic missiles and drones at Ukrainian cities in overnight attacks, officials reported on Thursday as Ukrainian President Volodymyr Zelenskyy said Moscow was "hesitating" about another round of U.S.-brokered talks on stopping the fighting.

Washington has proposed further negotiations next week between Russian and Ukrainian delegations either in Miami or Abu Dhabi, in the United Arab Emirates, which was the location of the last meeting, Zelenskyy said late Wednesday.

Ukraine "immediately confirmed" it would attend, he said. "So far, as I understand it, Russia is hesitating," Zelenskyy told reporters in a messaging app interview late Wednesday.

Kremlin spokesman Dmitry Peskov said on...