Mulled US nuclear posture shift would lack credibility

Abstract

Subject Potential US adoption of a 'no first use' nuclear weapons policy. Significance The administration of US President Barack Obama is reportedly considering the adoption of a 'no first use' nuclear weapons posture in his final months in office. A no first use policy would involve the United States declaring that it would only use its nuclear arsenal in response to a nuclear attack, never as a preliminary move in escalating tensions. This shift would be a significant departure from Washington's earlier posture, which maintained ambiguity as to whether nuclear weapons would be used in a hypothetical conventional attack on the United States or its allies. Impacts Arsenal upgrades and shifts in doctrine favouring tactical nuclear weapons would counteract the benefits of a restrained declaratory policy. Technological breakthroughs with hypersonic missiles are likely to undermine existing legal and diplomatic arms control arrangements. Obama may take up the pursuit of nuclear arms reductions with an ex-president's public profile. Eastern NATO allies will react strongly against any hint that their security does not fall under the US nuclear umbrella.