Fun fact: You only need around a few hundred well placed nuclear strikes to start a nuclear winter, effectively ensuring the deaths of billions.
“The State of Israel is widely believed to possess nuclear weapons. Estimates of Israel’s stockpile range between 80 and 400 nuclear warheads, and the country is believed to possess the ability to deliver them in several methods, including by aircraft, as submarine-launched cruise missiles, and via the Jericho series of intermediate to intercontinental range ballistic missiles.”
Study about the effects of various amounts of nuclear weapons