Thank you for calling it what it is ... an "Occupation", not Disputed Territories as Israel calls it.
And you're right, Israel's occupation of the West Bank in 1967 wasn't accidental. It was the Israeli solution to the incompletion of the 1948 ethnic cleansing (in 1948, they managed to expel “only” half of the Palestinians and took over “only” 78% of the land. That inability to get rid of all the Palestinians explains Israel's policies till this day).
The plans were drawn long before the 1967 war. In 1963 a group of senior officers and officials drew the "Schaham Plan" which would be implemented in 1967, to impose military rule on the West Bank (and Gaza) after their planned occupation.
Now cue the "ICJ is antisemitic / Pro-Hamas" charges