Summary: This week we have two covers. In Europe we ask what can be done to fix the European Union. As leaders gather to celebrate the club’s 60th anniversary, the project is in trouble. If it is to survive, the EU must become a lot more flexible http://www.economist.com/news/leaders/21719462-if-it-survive-european-union-must-become-lot-more-flexible-can-europe-be-saved In the rest of the world our cover examines the extraordinary expectations surrounding Amazon. Never before has a company been worth so much for so long while making so little money. If it fulfils its ambitions, it may attract the attention of an even stronger beast: government http://www.economist.com/news/leaders/21719487-amazon-has-potential-meet-expectations-investors-success-will-bring-big Terror in London A car, a kitchen knife and an Islamist-inspired killer bring chaos to the British capital http://www.economist.com/news/britain/21719525-car-kitchen-knife-and-islamist-inspired-killer-bring-chaos-central-london-britain US and them Donald Trump promises America greatness. Cutting aid and diplomacy will only make the country weaker http://www.economist.com/news/international/21719467-could-donald-trumps-attack-un-destabilise-world-us-v-un Science’s publishing problem Scientific journals were once a boon. Now they are slowing the progress of medical research http://www.economist.com/news/science-and-technology/21719438-about-change-findings-medical-research-are-disseminated-too
