At least 38 people are killed in 24 hours and Ukraine's Volodymyr Zelensky warns dozens more could be trapped under rubble.

Officials say at least nine 3,000kg aerial bombs hit a southern Ukrainian village in what the president calls an "utterly horrific" attack.

Western officials stress that any force sent to Ukraine would not take part in any offensive operations.

Is the West turning its back on Russian dissidents?

Ukraine and Russia have both said air alert apps were hacked on Sunday night after fake messages warning of nuclear and chemical attacks were sent to users.

Ukraine's emergency alert app issued a nationwide air raid warning, as well as alerts for a radiological threat, a chemical attack and street fighting in Kyiv on Sunday evening - all of which turned out to false.

Many Ukrainians, who have faced years of Russian attacks, did not take the messages seriously and doubted their veracity.

Though unprecedented, the six-day truce has done little to alter the wider trajectory of a war that continues to grinds on.

Ukraine and Russia have both said air alert apps were hacked on Sunday night after fake messages warning of attacks, including nuclear, were sent to users.

Neither government has confirmed who was responsible for the cyberattacks on Sunday evening.

Both Ukraine and Russia say their air raid alert apps were cyber-attacked - Joe Tidy explains what we know so far.

A rare humanitarian ceasefire allowed civilians to evacuate the Russian-occupied city of Oleshky.