The Kyiv Independent news desk

The annual award, named in honor of the late investigative journalist Georgiy Gongadze, recognizes journalists committed to independent and principled reporting.

Key developments on May 21: * 'Another long-range sanction' — Ukraine strikes Syzran oil refinery, more than 800 kilometers from border * Russia allegedly delivers nuclear warheads for joint exercises with Belarus * Ukraine strikes Russian FSB headquarters in occupied Kherson Oblast, killing and injuring nearly 100 troops * Ukraine developing new low-cost way to down Russian Shahed-type drones * Russian drones hits apartment buildings in Dnipro injuring 15, including 13-year-old boy Ukrai

While Russia lost 67 soldiers per square kilometer of advance in October, that figure rose to 165 in January, 244 in February, 254 in March, and 179 in April, according to Defense Minister Mykhailo Fedorov.

The number includes 910 casualties that Russian forces suffered over the past day.

Russia's security service found depleted uranium in an unexploded missile recovered in Chernihiv Oblast, as NATO warns of "devastating" consequences if nuclear weapons are used in the war.

"Well, they (Russians) know if that happens, the reaction is devastating... Of course, we follow that (exercises), we monitor what is happening," NATO Secretary-General Mark Rutte said.

The number includes 920 casualties that Russian forces suffered over the past day.

*Russia hits Ukraine's Chernihiv, Sumy oblasts in morning attacks, killing 5*Ukraine says it struck major Russian oil refinery, pumping station*China secretly trained Russian soldiers who later fought in Ukraine, Reuters reports*Russia launches large-scale nuclear forces drills after Belarus exercises *Russian military hospitals overwhelmed by wounded soldiers from war in Ukraine, media reportsT

The number includes 1 140 casualties that Russian forces suffered over the past day.

Key developments on May 18: * 'Hide-and-seek with death' — Ukraine details grim situation in Pokrovsk * Ukraine claims control of Stepnohirsk in Zaporizhzhia Oblast, military intelligence says * Belarus starts nuclear drills with Russia days after Zelensky warns of attacks on Ukraine, NATO * Ukraine develops 1st domestically produced guided glide bomb, ready for combat use * Russia calls for Ukraine peace talks to resume after months of downplaying them * At least 2 killed, 51 injured in

Key developments on May 16-17: * Drone strike reportedly hits major Russian fertilizer plant linked to explosives production * Kyiv repatriates 528 bodies that Russia claims are fallen Ukrainian soldiers * 'Justified response' – Zelensky releases footage of Ukrainian strikes on Russian aircraft, other targets deep behind enemy lines * Ukraine attack on Moscow region 'completely fair response,' Zelensky says A fire likely broke out at the Nevinnomyssk Azot plant in Russia's southern Stavrop

The number includes 1,170 casualties that Russian forces suffered over the past day.

The number includes 1,230 casualties that Russian forces suffered over the past day.

Andrii Kovalenko, an official at Ukraine's National Security and Defense Council, described the facility as "a critical component" of Russia's defense-industrial complex.

Key developments on May 15: * Russia plans to strike President's Office building and state residence, Zelensky says * Massive fire erupts at Russia's Ryazan oil refinery as Ukrainian drone blitz hits multiple targets, oblasts * 205 Ukrainian POWs return from Russian captivity in latest exchange * Russia plans to attack Ukraine or NATO from Belarus, Zelensky says * Russian military unit documents own war crime, milblogger publishes then deletes video * Zelensky pays respects to victims of