Ukrainian officials have said that at least 15 people were killed after Russian missiles struck a crowded shopping mall in Kremenchuk, central Ukraine.
"They will replenish the composition of the troops of the Ministry of Defense of the Russian Federation," Chechen leader Ramzan Kadyrov said of the battalions.
A column of Russian multiple rocket launcher vehicles was purportedly blown to pieces by artillery with the help of Ukrainian special forces.
Ukrainian artillery reportedly took out two Russian MT-LB armored personnel carriers and one T-72B tank.
Russian artillery allegedly targeted Ukrainian forces before opening fire on them and quickly moved to new locations.
A pair of Russian Mi-8 attack helicopters take to the sky before they are seen traveling close to the ground over the countryside somewhere in Ukraine.
The region is sandwiched between NATO member countries Lithuania and Poland and has been Russian territory since 1945.
Ukrainian military officials posted footage of its forces striking Russian targets on the occupied island.
According to reports, Putin ordered 67-year-old General Pavel back to active service last month to lead Russian special forces operating in Ukraine.
Vladimir Solovyov said that Russia was only using 18 percent of its army in Ukraine and a "peacetime" army.
The NATO Response Force (NRF) is currently made up of around 40,000 troops, but it will swell to 300,000.
"You are not slaves and cannon fodder. You don't have to die," the Ukrainian leader said on Sunday night.
Russia has accused the West of trying to drive the country into an artificial default.
The secretary of state said Sunday that "when it comes to Putin's strategic objectives, he's already failed."
World leaders pocked fun at Putin's notorious shirtless horseback photoshoot. "We've got to show them our pecs," suggested British PM Boris Johnson.
A 7-year-old girl was pulled out of the rubble alive following Sunday's attack, according to Ukrainian officials.
Video footage showed a motorcade rushing towards the Kremlin building, the seat of the Russian government.
This includes Vladimir Putin promising to send nuclear missiles to Belarus.
It doesn't appear the Russian leader has "a long life ahead of him," said Ukraine's top intelligence chief in an interview published Saturday.
Belarusian President Alexander Lukashenko on Saturday voiced his concerns to the Russian president about the "aggressive" actions of Poland and Lithuania.
Putin wants to drag Belarus into the Ukraine war "as a direct participant," officials in Kyiv said Saturday after the attacks.
Panelists on Russian state TV channels have made repeated threats of missile strikes against capitals of European countries.
A Russian thermobaric multiple rocket launcher that is mounted on a tank chassis fired at Ukrainian targets with devastating effects, according to reports from Russia military.
Ukrainian forces fired three large tactical ballistic missiles at Russian positions including ammunition depots, as images from Ukraine's military reportedly show.
"Spetsnaz" units are a type of special forces that typically carry out special reconnaissance operations, acts of sabotage, and psychological warfare.
Ukrainian Marines, working with artillery gunners and a mechanized unit, reportedly took out a Russian tank and ammunition.
The pro-Russia, so-called Donetsk People's Republic has taken fortified positions that were held by Ukrainian forces until recently, images purport to show.
Russian Foreign Minister Sergey Lavrov also compared actions by NATO and the EU to Nazi leader Adolf Hitler's strategy in World War II.
Aerial footage reportedly shows Chechen troops bombing a Ukrainian stronghold amid claims they have seized the towns of Zolote and Gorskoye.