The wife of Ukraine's President Volodymyr Zelenskyy has written an open letter, saying what has happened to her country is "impossible to believe".
The letter, entitled 'I Testify' and addressed to the world's media, was released on encrypted messaging service Telegram.
In it, Olena Zelenska says: "Despite assurances from Kremlin-backed propaganda outlets, who call this a 'special operation' - it is, in fact, the mass murder of Ukrainian civilians".
But she says Russia's President Vladimir Putin has underestimated Ukrainians, who stand in "unparalleled unity".
Deploring the deaths of children in the war, she names some of those who have died and goes on to say there are now several dozen children "who have never known peace in their lives".
Ukraine's first lady's whereabouts are not known. Her husband said at the weekend his family was still in the country and she indicates this in her letter.
She explains she is writing because she has been overwhelmed with requests from media outlets globally and it is her answer to the questions - her "testimony from Ukraine".
She writes:
"Perhaps the most terrifying and devastating of this invasion are the child casualties. Eight-year-old Alice who died on the streets of Okhtyrka while her grandfather tried to protect her. Or Polina from Kyiv, who died in the shelling with her parents.
"14-year-old Arseniy was hit in the head by wreckage, and could not be saved because an ambulance could not get to him on time because of intense fires.
"When Russia says that it is 'not waging war against civilians,' I call out the names of these murdered children first."
Key developments in the Ukraine war:
• Ukraine claims senior Russian general has been killed in fighting near Kharkiv
• Zelenskyy accuses Russia of violating earlier humanitarian corridors
• Russia has warned it could cut its gas supplies to the West through the Nord Stream 1 pipeline
• Talks between Ukraine and Russia held in Belarus
• New laws to help target Russian oligarchs pass Commons
Ms Zelenska says that in the eyes of women and children is "the pain and heartache of leaving loved ones and life as they knew it behind".
The letter goes on to describe men bringing their families to the borders "shedding tears to break apart their families, but bravely returning to fight for our freedom".
After all, she says, "despite all this horror, Ukrainians do not give up".
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