"In this day and age, no one should be allowed to possess nuclear-weapons-usable material without providing an armed defense of that material, " said Edwin Lyman, a nuclear physicist with the Union of Concerned Scientists.

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As the chart shows, the amount of potentially weapons-usable nuclear material either highly enriched uranium or separated plutonium under inspection has increased far faster than the funds available for safeguarding it.

ECONOMIST: Troubling flaws in the world's nuclear safeguards

Therefore, in accordance with section 202(d) of the National Emergencies Act (50 U.S.C. l622(d)), I am continuing for 1 year the national emergency with respect to the risk of nuclear proliferation created by the accumulation of weapons-usable fissile material in the territory of the Russian Federation.

WHITEHOUSE: Notice -- Continuation of the National Emergency with Respect to the Risk of Nuclear Proliferation Created by the Accumulation of Weapons-Usable Fissile Material in the Territory of the Russian Federation | The White House