As the world wrestles with the most serious global IT outage ever experienced, we assess the immediate security risks and the effects on aviation. Then: as the Republican National Convention wraps up in Milwaukee, we analyse Donald Trump's 93-minute speech and we hear from Tel Aviv, where a Houthi drone appears to have penetrated Israel’s air defences. All that, plus the latest business news and an exploration of why Zurich is bidding goodbye to dreams of hosting Eurovision. 

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