Very cool. Now missile manufacturers will program their missiles so they avoid the interceptor. Let robot wars begin.

No, they will develop systems similar to what ships now use in their last-option defense against missile attacks, guns capable of shooting bullets at such a high rate that, effectively, a 'lead curtain' is created which destroys the incoming threat. A miniature version could do the same and at 10 km/s the metal curtain would pulverise any incoming kinetic kill vehicle, allowing the warhead to do it's thing.

The bad thing is if it works on a nuclear warhead, the missile track will be showered with plutonium or enriched uranium.

The EKV is a sophisticated suborbital payload filled with sensors and rocket motors that is intended to detect and intercept an intercontinental ballistic missile at the edge of space at hypersonic speeds. Nothing new. Looks like they are borrowing proven technology from our "Star Wars" project that Pres. Clinton cancelled more than 15 years ago.
In March 1983, President Reagan unveiled a new vision of national security based on protecting lives rather than threatening them. This announcement kicked off the Strategic Defense Initiative-popularly known as Star Wars that invigorated weapons work at Lawrence Livermore National Laboratory. The crowning achievement of the Strategic Defense Initiative was "Brilliant Pebbles". These orbiting satellites were to watch for enemy ICBMs to enter Earth's upper atmosphere, automatically calculate a trajectory course then launch itself with on-board rockets to intercept, collide and destroy without any munitions. On command, a global constellation of these nonnuclear spacecraft could detect and destroy missiles without any external help. ICBMs were not and are not agile nor immune to collisions in near space. If the first rocket propelled satellite smaller than an office desk failed to collide with the ICBM, dozens of other watching orbiters would. We were well on our way towards achieving that goal for 1/100 of the cost that NASA required when this idiot president stepped in.
Choose wisely DemonDuck between a shower of radiated particles in space or a multi-megaton explosion over your head.

If the opposition has to replace all of their missiles to work around the interceptor, the interceptor was successful.

Why not have the interceptor deploy a cloud of evenly spaced tungsten balls,each spaced less than the diameter of the target, as it closed on the target? That would make intercepts much easier.They used the same principle late in WW2 with an anti-submarine weapon called the Hedgehog.It launched a bunch of depth bombs spaced less than the diameter of the hull of the sub in an oval pattern.If the sub was anywhere within the oval,at least one depth bomb would have hit it.

re; bas
Your anti antimissile system is very heavy thereby reducing the number and size of warheads carried so even if the anti-antimissile system works the antimissile system has reduced the damage inflicted by the offensive missile.

Some video of Lockheed Martin's version. http://www.youtube.com/watch?v=B9mNNA2gEF8
I once saw a longer video of it doing other maneuvers, including rolls, called out by a person as they were performed.

Proven STAR WARS technology is rather a stretch. As I remember, three Peaceful Multi Billion Projects failed soon after launch. Space is still an experiment and when you send it up it just may land in your back yard.

If they ever use these on a strategic level, we may be saved from incoming warheads... but we can say goodbye to any beneficial use of Low Earth Orbit. Goodbye GPS, for starts. We NEED more trash orbiting our planet.