Russia entered into an international agreement guaranteeing Ukraine’s territorial integrity (Minsk), and subsequently clearly violated it. Israel and Palestine have no such agreement, though they’ve come relatively close to making one, and both countries have repeatedly violated the other’s territorial sovereignty over the past 80 years. They’re very different cases.
Uh? Colonizing a country and land that isn't theirs inherently violates multiple international laws. A treaty isn't somehow worth more than territorial integrity