President Vladimir Putin has approved Russia's updated nuclear doctrine to share the country's nuclear deterrence with its allies—mirroring NATO 's "attack on one member is an attack on all" doctrine, as President Zelensky of Ukraine marks 1,000 days since Russia invaded his country.

Watch live as David Lammy marks 1,000 days since Russia launched its full-scale invasion of Ukraine. The foreign secretary has warned that the UK will “never let up” in backing Ukraine as questions lingered over whether British-supplied missiles could be authorised to hit targets within Russia.