U.S. experts are casting doubt on the effectiveness of Russia’s threat to expand the use of its new ballistic missile following publicly announced changes in Moscow’s nuclear doctrine.

VOA Russian and Ukrainian reporters spoke with experts, including Matthew Bunn, a nuclear weapons analyst and former scientific adviser in the Bill Clinton administration; John Erath, at the Center for Arms Control and Non-Proliferation; and John Hardy, a security expert at the Foundation for Defense of Democracies, about Moscow’s announced change in policy and its longtime use of nuclear threats.

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