Corpses 'carpeted through the streets,' Boychenko says, accusing Russia of blocking humanitarian convoys for weeks and bringing in 'mobile crematoriums'

Armed forces minister James Heappey says 'all possible options' on the table if Putin uses chemical weapons, after Ukraine accuses Russia of using 'poisonous substance' in Mariupol

White Helmets chief says years of experience with Russian shelling make Syrians 'among those most able of understanding the pain of the people of Ukraine'

With war grinding toward 7th week, Ukrainian forces say they're bolstering positions ahead of anticipated Russian effort to link Crimea with Moscow-backed separatist territories

Zelensky alleges southern city 'burnt to ashes' as his troops prepare for renewed Russian offensive; separately, mayor of Makariv says at least 132 shot dead in the town

Officials say mobile crematoria and heavy machinery being brought into city to remove thousands of dead, rubble, as mayor claims stark parallel with infamous Holocaust death camp

Moscow is accused of indiscriminately killing Ukrainian civilians across the war-torn country; Zelensky warns Russian troops now heading east to 'liberate' the Donbas

Some 130,000 people remain in trapped city, continuously pounded by Russian attacks that largely come 'from the sea,' Boichenko says; evacuation attempts continue to face setbacks

Ukrainian forces reclaim territory in the country's west, while Russia focuses on key areas along the Black Sea and Donbas region

At least 5,000 residents killed in port city, as over 160,000 remain without food, water, electricity; Kyiv suburb recaptured; toll in strike on Mykolaiv gov't building rises to 33