Eryn MacDonald

Analyst

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Ms. MacDonald received her MA in International Relations and Comparative Politics from Cornell University in 2009, specializing in China. Before coming to UCS in 2011 she worked at the MIT International Science and Technology Initiatives (MISTI) program, and was an instructor at Endicott College teaching courses on international relations. Areas of expertise: Nuclear weapons complex, China

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Eryn's Latest Posts

The Senate Should Oppose the New Low-Yield Trident Warhead

This week, the Senate Armed Services Committee will take its turn to mark up the FY 2019 National Defense Authorization Act (NDAA). This also gives it an opportunity to weigh in on the Trump administration’s proposal for a new, lower-yield warhead for the Trident D5 submarine-launched ballistic missile (SLBM), funding for which is included in the bill. Read more >

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Whose Finger Is on the Button? Nuclear Launch Authority in the United States and Other Nations

Throughout the 2016 presidential campaign, and perhaps even more since Trump’s election, the media discovered a newfound interest in the minutiae of US nuclear policy. One question in particular has been asked over and over—can the president, with no one else to concur or even advise, order the use of US nuclear weapons? Most people have been shocked and somewhat horrified to find that there is a simple answer—yes. Read more >

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START from the Beginning: 25 Years of US-Russian Nuclear Weapons Reductions

For the past 25 years, a series of treaties have allowed the US and Russia to greatly reduce their nuclear arsenals—from well over 10,000 each to fewer than 2,000 deployed long-range weapons each.  These Strategic Arms Reduction Treaties (START) have enhanced US security by reducing the nuclear threat, providing valuable information about Russia’s nuclear arsenal, and improving predictability and stability in the US-Russia strategic relationship. Read more >

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No President Should Be Able to Start a Nuclear War Single-Handedly

Among the general craziness of the 2016 presidential campaign, you can be forgiven if you missed one particular crazy piece of information: the president of the United States currently has the authority to order the launch of nuclear weapons without input from anyone. This has actually been the case for decades, but the campaign brought it to the attention of the general public, many of whom were hearing it for the first time and were understandably surprised, and even somewhat alarmed, at the idea. Read more >

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Cuts to the Fissile Materials Stockpile

The Final Countdown

The United States maintains stockpiles of weapons-usable fissile materials—plutonium and highly enriched uranium (HEU)—that are much larger than needed. This material is a security risk, and is also expensive to store safely. Some of this fissile material has already been declared “excess to military needs” and is awaiting disposition. Even after that excess material is disposed of, however, the United States will still have far more material than it needs for its current or future arsenal. President Obama should declare additional material excess and schedule it for disposition as soon as possible. If done correctly, this would reduce opportunities for nuclear terrorism. It would also be a step toward making nuclear reductions more difficult to reverse.

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