Israel's nuclear weapons program is thought to include 
about 200 warheads deployed on 
ballistic missiles and aircraft and on three submarines, 
according to the Washington-based 
Carnegie Endowment for International Peace.

Israel is also believed to stock 
chemical and biological weapons, 
according to the Carnegie Endowment and 
the Monterey Institute of International Studies, 
which track such issues.

Israeli officials do not comment on the country's nuclear weapons potential.

"Israel isn't a threat to the United States. 
We don't treat different cases the same," 
Bolton said, adding that the United States favors 
"a Middle East free of all weapons of mass destruction."