David Wright

North Korea announced on Tuesday that it had successfully tested a new, larger rocket engine. It says the engine will allow it build a more capable satellite launcher—a “rocket for the geo-stationary...

One of the frustrations of trying to change policy is that frequently repeated myths can short-circuit careful thinking about current policies and keep policy makers from recognizing better...

Last week, on August 24, North Korea conducted a test of the KN-11 submarine-launched missile it is currently developing. This is the third test of the missile this year, and the first time the...

North Korea launched a series of missile tests in recent weeks, including one yesterday that landed 250 km off the coast of Japan. Here’s a summary of the North’s various missile systems and my...

In my previous post , I looked at what we could learn about North Korea’s Musudan (Hwasong-10) missile from the lofted flight it launched on June 21. In this post, I look at some other aspects of the...

After four failed attempts to launch its so-called Musudan missile (called Hwasong-10 in North Korea), it appears to have had at least one success in a new sets of flight tests on June 21. That test...

The US early warning system is on watch 24/7, looking for signs of a nuclear missile launched at the United States. As a highly complex system with links to sensors around the globe and in space, it...

In April 2009 in Prague, President Obama highlighted the continuing risks posed by nuclear weapons. He promised to “take concrete steps” to reduce those risks and “put an end to Cold War thinking.”...

In talking with a young colleague recently, I realized he had no idea the U.S. and Russia keep thousands of nuclear weapons on alert, poised to launch 24 hours a day, every day. And I’ve come to...

Twenty-five years after the end of the Cold War, the United States and Russia continue to keep nearly 2,000 nuclear weapons constantly on high alert, ready to be launched in minutes. This is commonly...

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