Nuclear Weapons: Who Has What at a Glance Last Reviewed: July 2024 Contact: Kelsey Davenport, Director for Nonproliferation Policy, (202) 463-8270 x102; Daryl G. Kimball, Executive Director, (202) 463-8270 x107. The following arsenal estimates are based on the amount of fissile material—highly enriched uranium and plutonium—that each of the states is estimated to have produced. Fissile material is the key element for making nuclear weapons. India and Israel are believed to use plutonium in their weapons, while Pakistan is thought to use highly enriched uranium: •India is estimated to possess up to 172 nuclear warheads. •Pakistan is estimated to possess. approximately 170 nuclear warheads •Israel is estimated to have 90 nuclear warheads, with fissile material stockpiles for about 200 weapons.