Russia launched a massive attack on Ukraine overnight into Saturday, firing 653 drones and 51 missiles across the country as it marked Armed Forces Day, Ukraine’s air force said.

After a number of drone sightings near European airports and military bases, mysterious aircraft were seen over Ireland as Ukraine's Zelenskyy visited.

A European Union plan to use frozen Russian assets to fund Ukraine's fight against Russia would have "far-reaching consequences" for the EU, Moscow's ambassador to Germany warned on Friday.His statement came as EU leaders seek more ways to keep Ukraine afloat as it faces increasing pressure on the battlefield.

The European Union has unveiled a plan to use frozen Russian assets to support Ukraine over the next two years.

In a disused warehouse at an undisclosed location in Ukraine, a military drone instructor who goes by the call sign "DC" showed CBS News a makeshift practice course that students must learn to fly the increasingly indispensable devices through before they join the country's defense against Russia.