While Russia’s Su-57 “Felon” stealth fighter program has been plagued by production struggles, its designed weapons capability is formidable. -The jet features four internal bays to carry a wide array of advanced air-to-air and air-to-ground missiles while maintaining stealth.

NATO aircraft were scrambled Sunday night to respond to a Russian attack on Ukraine, the Polish military said Monday.

Ukraine faced another Russian drone and missile attack early Monday, with air raid alerts sounding across the country for at least six hours since midnight Kyiv time.