Several large Ukrainian cities were attacked, including the capital, Kyiv, as well as Dnipro, Lviv, Odesa and Kharkiv.
Catch up on key developments and the latest in-depth coverage of Russia's invasion of Ukraine.
The Ukrainian Foreign Ministry denounced Saturday's strike as "spit in the face" of Turkey and the United Nations, which brokered the grain export agreements.
A roundup of key developments and the latest in-depth coverage of Russia's invasion of Ukraine.
Video of the pre-dawn attack showed the charred remains of buildings in the Ukrainian port city.