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ACA’s journal, Arms Control Today, remains the best in the market. Well focused. Solidly researched. Prudent.

– Hans Blix,
former IAEA Director-General

Threat Assessment Briefs

Threat Assessment Briefs are provided as part of the "Realistic Threat Assessments and Responses Project" led by ACA Senior Fellow Greg Thielmann. Each brief takes an objective look at key security threats, and considers policy responses to those threats.

  • July 23, 2015

    Updated: We assess that the final comprehensive nuclear agreement between the P5+1 and Iran will be a net-plus for nonproliferation and will enhance U.S. and regional security.

  • May 12, 2015

    As the 2015 NPT Review Conference continues in New York, the international community’s failure to halt the spread of nuclear weapons to North Korea looms large.

  • March 5, 2015

    The future of U.S. and Russian nuclear cruise missiles is at an inflection point.

  • October 5, 2014

    As efforts intensify to bring the Iran nuclear negotiations to a successful conclusion by November 24, the issue of breakout continues to occupy center stage.

  • August 28, 2014

    As negotiators prepare to resume talks over Iran's nuclear program, they face a formidable task: to bridge the remaining gaps and reach a comprehensive nuclear deal by November 24.

  • May 7, 2014

    The international community has been acutely concerned for many years about Iran's increasing capacity to produce material for nuclear weapons. With sufficient fissile material and a warhead design, Iran could use its existing ballistic missiles to pose a credible nuclear threat throughout the region. Consequently, after repeatedly directing Iran to suspend uranium enrichment, the UN Security Council decided in 2010 that Iran also had to halt all activities related to ballistic missiles capable of delivering nuclear weapons.

  • September 20, 2013

    As negotiations are poised to resume between Iran and the six powers seeking to rein in Iran's nuclear program, it is difficult to avoid a sense of déjà vu.

  • July 24, 2013

    Preventing the production and accumulation of fissile material is an important objective of nuclear nonproliferation efforts. Unfortunately, the nuclear Nonproliferation Treaty (NPT) exempts the fuel used in naval propulsion reactors from the constraints the treaty otherwise applies to enriching uranium beyond the levels used in civilian power reactors. As the number of countries with nuclear-powered submarines expands, this exclusionposes a growing risk to achieving the nonproliferation goals of the treaty.

  • May 21, 2013

    Following condemnations by the international community of North Korea’s December satellite launch and February nuclear test, Pyongyang unleashed a furious barrage of rhetorical threats in March and April against the United States and South Korea. Now, the hot air war of the early spring appears to be over, despite the exercise launch of six short-range missiles by North Korea off its east coast in recent days and the ongoing visit of a U.S. aircraft carrier strike group to South Korea.

  • March 8, 2013

    Ten years ago today, President George W. Bush said in a radio address to the nation: "It is clear that Saddam Hussein is still violating the demands of the United Nations by refusing to disarm." Eleven days later, he announced the invasion of Iraq to remove the weapons of mass destruction (WMD) allegedly possessed by Hussein's brutal regime and to prevent their use by or transfer to terrorist networks such as al Qaeda. That no such weapons existed was less a symptom of flawed intelligence than the U.S. leaders' obsession with achieving regime change in Baghdad and their consequent willingness to distort evidence on WMD toward that end.

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