And this would be a bad thing, Why?
The Day the Zionist Entity is wiped off the map, the world will be better off for it.
In the short term, Israel's destruction would be a terrible thing as so many innocent people will die.
However, in the long term, it'll save so many more lives than would be lost.
The best action would be, Israel withdraw to the 67 borders and stop its racist policies, the latter being much as South Africa was forced to do.
As for Obama destroying Israel, hardly likely but Israel may well push so hard, middle eastern countries get together and force change.
Edit - they could start by holding up all oil deliveries to America until U.S. support for Israel stopped.
Once Israel is wiped off the map, its enemies will be free to turn their full attention to the Great Satan, America.