China appears content to let the carnage continue in Ukraine, anticipating a win for Vladimir Putin. Its real concern is avoiding an apparent win for America and the West. Never mind fears that cryptocurrencies might help Russia dodge sanctions: they are far better at helping to finance Ukraine’s efforts. And the cyborg cockroaches that may one day aid search-and-rescue operations.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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