More grim attacks on civilians by Vladimir Putin's Russian forces are expected as Ukraine continues to try and push forward its recent advance.
Putin pledged a "more serious" response by his military if the Ukrainian counteroffensive continues and claimed the main aim of the campaign is "the liberation of the entire territory of Donbas".
On Friday he added: "We are really quite restrained in our response to this for the time being. If the situation continues to develop in this way, the response will be more serious."
