Russia must strengthen its air defences, President Vladimir Putin said, a day after Ukrainian drones struck an oil terminal and naval base in Saint Petersburg where a key economic forum is taking place.

June 4 - Ukraine launched attacks on the two main centres in the Russia-annexed Crimea peninsula, Kremlin-installed officials in the region said early on Thursday, a day after Moscow and Kyiv traded strikes on each other's cities. Read more at straitstimes.com. Read more at straitstimes.com.

June 4 - Ukrainian attacks killed four people in the Russia-annexed Crimea peninsula, Kremlin-installed officials in the region said on Thursday, one day after Moscow and Kyiv traded strikes on each other's cities. Read more at straitstimes.com. Read more at straitstimes.com.

Ukrainian drones attacked energy and military sites in St. Petersburg as Russia's major economic forum was set to kick off in the city, a day after Moscow killed 23 people across Ukraine in devastating air attacks.

At least four people have been killed in Crimea, Moscow-installed authorities said on Thursday, a day after Kyiv targeted energy and military facilities in Saint Petersburg during Russia's flagship economic…