A massive attack by Russia against Ukraine's capital has killed four people and injured at least eight others, Kyiv Mayor Vitali Klitschko has said.

Drones hit several regions overnight, including Zaporizhzhia, where at least 16 people, including three children, were injured, authorities said.

Ukraine's foreign minister stated that hundreds of drones and missiles had been used in the latest attacks. Russia has not yet commented on the situation.

In a warning issued earlier, Ukraine's President Volodymyr Zelensky cautioned that Russia would not cease its confrontations with Ukraine and might target European air defenses, citing recent incursions into several NATO countries.

Russian President Vladimir Putin initiated a full-scale invasion of Ukraine in February 2022, disregarding international calls for resolution from global leaders. President Zelensky explained that Putin is likely to continue the offensive, underlining the unpredictable nature of future attacks.

In Poland, military alerts were triggered as Russian forces struck western Ukraine, with Polish jets deployed as a precaution following several incidents involving Russian drones on its territory.

Moscow denied allegations of responsibility for drone flights over Danish airspace, while tensions persist across the region, prompting NATO to enhance its presence along the eastern borders.

Following the trajectory of these events, the international community remains vigilant as Russia's intentions provoke unease among EU and NATO nations, with leaders taking measures to bolster collective defense capabilities.