Working in secret, Israel and Germany have jointly developed a nuclear missile detection system, according to the Defense News Web site.

Code-named Project Bluebird, the system is based on the prototype of an aerial infrared sensor designed to identify a nuclear-tipped missile speeding toward a target amid a cluster of decoy missiles.

Military planners work under the assumption that in a nuclear strike, decoy missiles could be launched along with those carrying nuclear warheads to confuse and overwhelm missile defense shields. According to the sources, Project Bluebird is designed to avert such a scenario.