The US is ignoring UFOs and might be missing proof of alien civilisations, according to a former Pentagon insider.

The government needs to do far more to investigate reports of unexplained objects flying around the sky, wrote Christopher Mellon, who served deputy assistant secretary of defence for intelligence in the Bill Clinton and George W Bush administrations.

A number of videos of US pilots encountering unexplained objects appear to suggest that there exists aircraft far superior to anything known to be held by America or its allies, said Mr Mellon, who is now part of the To The Stars Academy of Arts and Science, an organisation devoted to investigating such phenomena. Those might not be the work of alien civilisations – but if they are not, they appear to suggest that another Earth-bound country such as China or Russia has technology that we do not know about.

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