UK plans security review after spate of mysterious objects over America

Ben Wallace says sightings including suspected Chinese balloon are ‘sign of how the global threat picture is changing for the worse’

• US shoots down ‘octagonal’ flying object near military sites in Michigan

The UK will conduct a security review after the appearance of a series of mysterious objects – including a suspected Chinese spy balloon – over North and South America in recent days, the defence secretary Ben Wallace has announced.

It comes after US fighter jets shot down an “unidentified object” over Lake Huron on Sunday – the fourth similar object to enter US or Canadian airspace in just over a week.