And another important thing to bear in mind is that the start of the advance is the hardest part of the advance. Russia has built up a thick crust of defensive lines. At some point the advance penetrates that crust, and then the gooey center goes much more quickly.
And another important thing to bear in mind is that the start of the advance is the hardest part of the advance. Russia has built up a thick crust of defensive lines. At some point the advance penetrates that crust, and then the gooey center goes much more quickly.