An apparent act of sabotage at an Iranian nuclear site, blamed on Israel, has complicated the prospect of America returning to the 2015 nuclear deal; we ask what happens next. Many of Europe’s public-service broadcasters are being squeezed by populist movements and illiberal governments. How to keep them independent? And an effort to translate Latvia’s short but dense ancient poems.  For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer