Nato’s secretary general, Jens Stoltenberg, said the alliance has been monitoring Russia’s nuclear forces and that any deliberate attack against allies’ critical infrastructure 'would be met with a united and determined response'.
Russia continued to attack key infrastructure in Ukraine with missile strikes on Tuesday, amid warnings from the UN and some Nato countries that Moscow may be committing a war crime with its continuing deadly blitz on civilian targets.
Vladimir Putin's veiled nuclear threats are 'dangerous and irresponsible', Stoltenberg added. He said Nato had not noticed an changes Russia’s 'posture', but would be monitoring it
Russia Ukraine war: latest updates