To make it short, zionism is jewish supremacism. Zionists believe they are a superior people because god somehow chose them to inhabit Palestine according to the bible. So having divine right, man made laws are irrelevant to them as the word of god reigns supreme.
It's interesting to note that there are more zionists in the US than in Israel because evangelicals are mostly all zionists.
They believe Israel has to be remade whole (greater Israel) so Jesus can come back.
That's why the american right is so pro Israel because its success in reclaiming territories in the West Bank, Gaza, Golan Heights and Jordan is necessary for the rapture to happen. The rapture meaning, everybody dies and only the true believers (alive or dead) go to heaven.
Evangelical zionism don't see Jews as partners though but more as tools to reach their goals. Because when the rapture happens, if Jews don't convert to christianism, they going to hell too