Russian forces abandon key parts of northeastern Ukraine Saturday, in a collapse of Russian operations, resulting in a large advance by Ukrainian military.
Moscow struggles to hold on to their previously captured land in the past 6 months. Ukraine makes strong offensive moves as move to other captured regions.
Ukrainians and foreign people still fear that Moscow may deploy nuclear and chemical weapons into Ukraine.
U.S. President Joe Biden has made a promise that the U.S. forces will get involved is Moscow decides to use Chemical weapons.
On Saturday, Russian troops fled Ukraine's offensive strategies, as they leave ammo and artillery behind.