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That's pretty misleading  President Obama authorized rebuilding aging facilities where our current weapons are kept operational by performing maintenance and upgrades on existing weapons.
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The administration, analysts and policy wonks, estimate expenditures on that program could cost a trillion over the span of 3 decades, though other sources say that amount of money probably won't ever be spent.
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President Obama has kept the nuclear arsenal in the kind of shape needed to serve as a deterrent in today's world while continuing to reduce the total number of warheads as agreed upon by treaty.
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With Rick Perry in charge of Energy (that's nuclear not oil), we're on very shaky ground.
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What President Obama hasn't done is act out like a small child and provoke other nuclear powers.

That would be the belligerent twitterings of the small minded and dangerous buffoon Trump.
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(..who, not incidentally, has no clue what our various treaties with other world powers contain.)
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Resist