Trump declines to say if US will test nuclear weapons
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Russia's boasting big moves on a couple of nuclear 'super weapons.' Another may be operational soon.
Russia said it tested a nuclear-powered cruise missile and torpedo, two of its experimental weapons, in recent days.
Touting new weapons tests, Moscow signals to Washington that it must contend with the Kremlin’s power and negotiate.
Russian MP warns US nuclear test plans could destabilize global security, violate CTBT obligations. Follow Newsweek's live blog.
The latest war of words between Trump and Putin started after the latter announced the successful testing of a new, powerful cruise missile called the Burevestnik