How many nuclear weapons were the nuclear armed States estimated to have in their arsenals as of 2007?

According to official accounts as well as sources such as the Stockholm International Peace Research Institute (SIPRI) and the Natural Resources Defense Council (NRDC), the United States has an estimated 10,000 nuclear warheads; Russia has an estimated 15,000; France has some 350; China has about 200 and the United Kingdom less than 200.

Of the other nuclear-armed states who are not parties to the Non-Proliferation Treaty, India has an estimated 50-60 nuclear warheads, Israel, between 100-200, and Pakistan, an estimated 60. Altogether this amounts to over 26,000 nuclear warheads for the five nuclear weapon States and the other nuclear-armed states. 

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