Barack Obama wants the Pentagon to review the U.S.'s nuclear-weapons doctrine to prepare for deep cuts to the country's arsenal, The Guardian reports. The president rejected the Pentagon's first draft of the review as not consistent with his goal of eventually banning nuclear weapons entirely. He wants the new plan to contain the option of reconfiguring the arsenal to contain hundreds instead of thousands of strategic warheads and narrowing the range of conditions under which the U.S. can use nuclear weapons. The review should be finished by the end of the year. Obama will be chairing a session of the U.N. Security Council on Thursday addressing global nuclear disarmament.