It follows a drone strike on passenger trains in the Sumy region on Saturday that killed one and injured at least 30 others.

Ukraine-Russia war latest: 5 dead in mass missile and drone attack by Putin’s forces after Poland scrambles jets - Comes amid mounting concern Russia could be behind growing number of recent drone inc

In an interview with Euronews, the former United States Special Representative for Ukraine Negotiations Kurt Volker said Trump's impatience with Putin could prompt him to agree to provide Kyiv with Tomahawk missiles.

A missile ship, a radar station and an oil refinery were among the Russian assets hit in Ukraine’s latest drone attacks, according to Kyiv. The oil facility struck overnight is one of Russia’s largest, as Kyiv continues its attacks on energy infrastructure, causing gasoline shortages across the country.

U.S. President Donald Trump said on Monday he would want to know what Ukraine planned to do with U.S.-made Tomahawk missiles before agreeing to supply them because he does not want to escalate Russia's war against Ukraine.