Israel has numerous options. Option #1 would be to use its conventional and/or nuclear cruise missiles launched from its 3 submarines. Option #2 would be a direct air attack. Option #3 would be a commando raid (or series of raids). Option #4 would be an ICBM attack. Option #5 would be to finance a student uprising/coup, etc...
I reckon option 2 would still be the most likely