Sergei Surovikin, formerly commander of war effort against Ukraine, transferred to new role, amid speculation he may have been detained due to ties with mercenary leader

In a sign of Ukraine invasion's toll on armed forces, Red Square parade smallest in years with no military flyover; 24 Russian cities cancel May 9 events altogether

Blast shatters apartment windows, damages cars, leaves 20-meter crater in Belgorod; social media first blames Kyiv, until Moscow acknowledges mistake

Kyiv is striking back at Russian troops and Ukrainian officers say they want to capitalize on their momentum, amid Moscow army's artillery barrages

Moscow has been launching devastating strikes on Ukraine's power infrastructure as its forces suffer battlefield setbacks

Engineers rushing to stabilize the situation amid dropping temperatures; European Parliament recognizes Russia as a 'state sponsor of terrorism'

Su-30 fighter jet falls on two-story wooden building, sparking fire; no reports of casualties on the ground in 11th reported noncombat crash since start of Ukraine invasion

Warring countries are mostly using similar Soviet-era equipment, so Ukrainians often do not need much training to adopt what is left behind

Russian leader tells reporters after attending a summit in Kazakhstan that 222,000 reservists have been mobilized, as tens of thousands of men have fled Russia to evade draft

NATO chief says after Russia's missile barrage that Ukraine's Western allies are looking to provide it with more air defenses to protect against 'indiscriminate' attacks