US conducting ‘legal review’ of possible Russian war crimes in Ukraine – as it happened

• Absolutely there should be an investigation', Harris says in Warsaw
• Zelenskiy describes Ukraine hospital bombing as genocide'
• Twitter launches site on dark web to bypass Russia's block
• Sign up to receive First Thing - our daily briefing by email

Maya Yang reports:

North Carolina Republican congressman Madison Cawthorn has been charged with driving with a revoked license for the second time.