Trump and Zelenskyy agreed to strengthen Ukraine's air defences amid escalating Russian attacks, discussing joint production, drone technologies, and direct US cooperation to enhance Kyiv's ability to protect its skies.

Russia pummeled Kyiv with the largest drone attack of the war, hours after President Donald Trump spoke to Russia's Vladimir Putin, officials said.

Ukrainian President Volodymyr Zelenskiy said on Friday that interceptor drones had proved effective in downing many Russian drones deployed in an overnight Russian attack on Kyiv and issued a new call for their rapid development and production.

As part of efforts to reduce the Russians' ability to launch airstrikes, units of the Ukrainian Unmanned Systems Forces, in cooperation with other components of the defence forces, struck the Scientific Research Institute of Applied Chemistry in Russia's Moscow Oblast on 4 July.

Ukraine's Defense Forces struck a plant producing warheads for Shahed UAVs. The enterprise is located in the city of Sergiev Posad, Moscow region of Russia, the General Staff of the Armed Forces of Ukraine and the Unmanned Systems Forces report.