Senior Russian security official Dmitry Medvedev said on Tuesday that if the West supplied nuclear weapons to Ukraine then Moscow could consider such a transfer to be tantamount to an attack on Russia,

The Ukrainian military said on Monday that it found Western-made parts inside North Korean ballistic missiles, marking the latest discovery for Kyiv as it continues to find technology from Europe and the US inside weapons used by the Russian military.

Ukrainian investigators allowed journalists to view remains of an intermediate-range ballistic missile used by Russia on the battlefield, before an analysis could be completed.

Russia and Ukraine have traded air strikes, after a week of intensifying rhetoric in which Russia tested a new missile on Ukraine. Russia has made close to 1,500 strikes on Ukraine since Sunday evening on about half of the country's regions causing dozens of injuries, Ukrainian President Volodymyr Zelensky said.