ISWNews Analysis Group: Ukrainian forces have reached near the town of Lyman, and heavy battles continue to recapture this area from Russian control.

ISWNews Analysis Group: In the continuation of Russian retreats in Kharkiv Oblast in the east of Ukraine, Russian army forces completely withdrew from the north and northeast of Kharkiv.

ISWNews Analysis Group: After a series of retreats by the Russian army from Kharkiv Oblast in the last week, Ukrainian forces and its allies dominated large areas of the east of this oblast with an area of approximately 5900 square kilometers.

ISWNews Analysis Group: Clashes between the Russian army and the Ukrainian army in the provinces of Donetsk, Kharkiv, Zaporizhzhia and Kherson continues without any particular change in the conflict lines.

After 131 days of war, so far, Russia has occupied 98,444 square kilometers, equivalent to 16.3% of the area of Ukraine.

ISWNews Analysis Group: In the last 48 hours, Russian army and the Luhansk forces (LPR) captured several areas and settlements in the Luhansk oblast and entered the important city of Lysychansk.

Review of the latest field changes on the Ukrainian fronts after 99 days of war

Interactive map: Click here Read more:Latest Military Situation in Severodonetsk (Map Update)Russia begins 2nd phase of military operation in Ukraine

ISWNews Analysis Group: Russian Foreign Minister Sergey Lavrov has announced that the second phase of Russian military operation in Ukraine has begun.

ISWNews Analysis Group: The siege of Ukrainian forces in Mariupol has tightened, and about 5,000 Ukrainian troops are now trapped in the city.

ISWNews Analysis Group: The Russian army and DPR forces advanced on the city of Mariupol, besieging the Ukrainian forces in two areas.

ISWNews Analysis Group: Russian troops withdrew from all of Chernihiv and Sumy oblasts in northern Ukraine into Russian territory.