North Korea


How to Think about Space-Based Missile Defense

, co-director and senior scientist

UPDATE: In September 2018, UCS released an animated feature and video that explains how space-based missile defense works. Check it out here.

The idea of space-based missile defense system has been around for more than 30 years. There are at least two reasons for its continuing appeal. Read More

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24 Space-Based Missile Defense Satellites Cannot Defend Against ICBMs

, co-director and senior scientist

UPDATE: In September 2018, UCS released an animated feature and video that explains how space-based missile defense works. Check it out here.

Articles citing a classified 2011 report by the Institute for Defense Analysis (IDA) have mistakenly suggested the report finds that a constellation of only 24 satellites can be used for space-based boost-phase missile defense. Read More

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More Comments on the IDA Boost-Phase Missile Defense Study

, co-director and senior scientist

Part 1 of this post discusses one aspect of the 2011 letter from Missile Defense Agency (MDA) to then-Senator Kyl about the IDA study of space-based missile defense. The letter raises several additional issues, which I comment on here. Read more >

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China Not an Obstacle to US Summit with North Korea

, China project manager and senior analyst

Last fall, as North Korea raced to demonstrate it could strike the United States with a nuclear-armed missile, the Chinese government acceded to strict international economic sanctions it previously resisted. This spring, after North Korea declared it had achieved its goal and would stop further testing, the Chinese government acceded to North Korean requests for greater engagement, including high-profile meetings between Xi Jinping and Kim Jong-un.

President Trump, along with many US officials and observers, praised China’s willingness to sign on to tougher sanctions. But they greeted China’s positive response to North Korea’s testing freeze with a mix of skepticism and suspicion. Trump suggested his Chinese counterpart was playing geopolitical poker with the summit in Singapore. US observers wondered whether China felt threatened by the summit and intentionally undermined it.

That’s unlikely. Read more >

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Closing North Korea’s Nuclear Test Site

, co-director and senior scientist

Of the surprising announcements North Korea has made in recent weeks, one of the most surprising was its statement that it would not only end nuclear tests but shut down its nuclear test site with international observers watching.

What should we make of this? Read more >

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