New images show Chinese spy balloons over Asia

New evidence of China's spy balloon programme - including flights over Japan and Taiwan - has been uncovered by BBC Panorama.

Japan has confirmed balloons have flown over its territory and said it's prepared to shoot them down in future.

China has not directly addressed the evidence presented by the BBC.

US-China relations were thrown into turmoil earlier this year, when an alleged Chinese spy balloon was shot down off the US coast.

China claimed the balloon seen over north-western US in late January was a civilian airship, used for scientific research such as meteorology - and that it was an unintended and isolated event.

John Culver - a former East Asia analyst for the CIA - told Panorama that this "had been not just a one-off, but a continuing effort dating back at least five years." He said the Chinese balloons were "specially designed for these long-range missions" and some had "apparently circumnavigated the globe".

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