http://foreignpolicy.com/2016/10/21/u-s-seeks-to-scupper-proposed-ban-on-nuclear-arms/

U.S. Seeks to Scupper Proposed Ban on Nuclear Arms

The Obama administration once sought a nuclear-free world. Now it’s fighting a ban on those very weapons.

• By Colum Lynch
• October 21, 2016

Almost eight years after President Barack Obama pledged in a landmark speech in Prague to seek “a world without nuclear weapons,” U.S. diplomats are mounting an aggressive campaign to head off a bid by non-nuclear states to ban such atomic arms.
American diplomats say the increasing belligerence of China and Russia — from the South China Sea to Syria to the Baltic — as well as the advancing pace of North Korea’s nuclear weapons development, make it untenable for the United States and its allies to support such a far-reaching commitment to scrap their nukes.
“The security climate is not such that it is conducive to nuclear disarmament,” said a senior U.S. official, asserting that a treaty could undermine the nuclear deterrent in Europe and Asia.http://foreignpolicy.com/2016/10/21/u-s-seeks-to-scupper-proposed-ban-on-nuclear-arms/