Ukraine marks its independence from Soviet rule and six months of war with Russia; Volodymyr Zelenskiy warns of ‘brutal strikes’

• Zelenskiy warns Russia of strong response to independence day attacks
• At a glance: what we know on day 182 of the invasion

The UN has said it is “very concerned” about plans by Russian-backed authorities to hold trials for captured Ukrainian soldiers in Mariupol.

Pro-Russian officials appear to be installing metal cages in a hall in Mariupol as part of plans to establish what they were calling an “international tribunal”, a UN rights office spokesperson said, adding that such a process could itself amount to a war crime.