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The Ministry of Defence has unveiled its prototype unmanned combat air vehicle (UCAV).
"President Barack Obama has said the biggest threat to US security is the possibility of a terrorist organisation obtaining a nuclear weapon."
"US President Barack Obama and his Russian counterpart, Dmitry Medvedev, have signed a landmark nuclear arms treaty in the Czech capital, Prague."
"Was the great Florentine artist and scientist who painted the Last Supper, designed the legendary Sforza horse and did the first great studies of human anatomy also a sinister military genius whose inventions caused horrible...
"The US this week achieved a goal that has eluded it since Ronald Reagan's Star Wars programme by knocking out a ballistic missile using a high-powered laser beam mounted on a plane."
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