Original sentence: The three Baltic republics — Latvia, Lithuania, and Estonia — refused to join, as did Georgia: all four countries took the view that they had been illegally incorporated into the USSR in the first place
Edited sentence: However, in 1999, Uzbekistan, Azerbaijan and Georgia withdraw from the Treaty established for CIS and form the alliance of GUUAM.The three Baltic republics — Latvia, Lithuania, and Estonia — refused to join, as did Georgia