Ukraine may have been underestimated before its elaborate attacks on Russian bombers dented Moscow's military capabilities - but will it substantially shift the balance of the war?

Russia will take years to replace nuclear-capable bomber planes that were hit in Ukrainian drone strikes last weekend, according to Western military aviation experts, straining a modernisation programme that is already delayed.

Ukraine unleashed more than a hundred drones smuggled deep into Russia in what it called its most damaging attack yet.