The largest known Russian drone attack since full-scale war began in 2022 killed a woman in the Kyiv region and injured at least three people, Ukrainian authorities said early on Sunday, as Moscow stepped up strikes following peace talks on Friday.

Peace in Ukraine remains as elusive as when Russian tanks first streamed across its borders more than three years ago. This week’s talks in Istanbul—talks that Vladimir Putin himself proposed—show he isn’t yet ready to do a deal.

A Russian drone attack on a bus in northeastern Ukraine killed at least nine people and injured seven others, Ukrainian officials said Saturday, just hours after the two countries met for the first direct peace talk in three years.