Across eastern Ukraine, Russia’s tiny gains are adding up. It is capitalizing on a series of small advances and throwing significant resources into an emerging summer offensive, one that risks reshaping control over the front lines.

Ukraine faced another night of Russian drone assaults as several cities and regions came under attack between Tuesday night and early Wednesday morning, causing injuries and damage to both residential and critical infrastructure.

Amid the deadlock on the front lines, Ukraine's elite soldiers are finding other ways to cause problems for Russia.

Authorities say a Russian missile hit a Ukrainian army training ground in an attack that killed three soldiers and wounded 18 others

Ukraine's armed forces have confirmed a Russian missile strike hit a military training unit, causing a number of casualties. Ukrainian ground forces said late on Tuesday that three service personnel were known to have been killed and 18 had been wounded.

Russia said on Thursday it had taken full control of the shattered town of Chasiv Yar in eastern Ukraine after nearly 16 months of fighting, an assertion which Kyiv dismissed as "propaganda". Following are key facts about Chasiv Yar,