Kyiv hit by 'massive' Russian attack, mayor says

Kyiv mayor reports a 'massive' Russian attack on the capital, leading to casualties. President Zelensky warns of Russia's broader intentions and tests on European air defenses, with hundreds of drones and missiles used in the recent attacks in Ukraine. International tensions escalate as Poland and other neighboring countries face incursions, with Nato reinforcing its eastern flank amidst escalating conflict.