Russia cut the gas flowing through the Nord Stream 1 pipeline by half in what many see as retaliation for Europe’s support of Ukraine. EU energy ministers fear further cuts as winter approaches. A new research review suggests the decades-long reliance on SSRIs to treat depression was based on a false premise. And why Dakar’s plant vendors show such high levels of trust. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer