Boston Mayor Marty Walsh urged people on Twitter to join in a moment of silence to honour those affected by last year's marathon bombings:
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Britain is among the least devolved countries in the world, figures from the RSA show.
Alex Salmond announced he will stand down as Scotland's First Minister and SNP leader after voters rejected independence in the referendum.
Prince Harry has lifted five-year-old girl onto his shoulder after he spotted her in tears at the Invictus Games.