To prepare for a potential conflict with Russia, NATO conducts a huge rehearsal of its air defences. Plus - how computer chips are Taiwan's greatest defence against China and scientists find an answer to the age-old question "Which came first: the chicken or the egg?"

The World in 10 is your daily round-up of the biggest stories from across the world, as seen through the eyes of the Times of London. You can hear more of these stories on Times Radio, and read more with a digital subscription at thetimes.co.uk.

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