A dramatic rise in Ukrainian attacks on Russian oil refineries has sent gasoline prices in Russia to record highs, despite the government banning petrol exports to cope with the crunch.

Drones have dominated the skies above Ukraine, becoming crucial and constantly evolving assets for both Moscow and Kyiv.

The US has been blocking Ukraine from firing long-range missiles into Russia for several months. The Pentagon introduced a review mechanism in late spring that is effectively preventing Kyiv from striking targets in Russian territory,

The Russian invasion of Ukraine has had a profoundly negative impact on Ukraine, as well as on the global food, financial, and energy markets.

Russia launched drones and a missile into Ukraine overnight into Sunday, the air force in Kyiv said, as the country kicked off independence day celebrations marking the anniversary of its 1991 declaration of independence from the Soviet Union.

U.S. President Donald Trump renewed a threat to impose sanctions on Russia on Friday if there is no progress toward a peaceful settlement in Ukraine in two weeks, showing frustration at Moscow a week after his meeting with Russian President Vladimir Putin in Alaska.