Does it make any difference if Netanyahu declares he's annexing parts of the West Bank, or extending sovereignty or Israeli law to them? Will the language affect world reaction?

Backing Israel's position against pending war crimes probe, 7 countries say Palestine is not a state that can transfer jurisdiction to the ICC. Not a single one argues the opposite

What exactly is Israel accused of? How likely are Israelis to land in the dock? Are Palestinians also to be probed? And could this all have been avoided?