Bloomberg Sonnen GmbH, a German solar-energy-storage maker that competes against Tesla Motors Inc.’s Powerwall battery, may pursue an initial share sale as early as 2017 to develop additional services. The company, formed in 2010 in Bavaria, sold its 10,000th battery this year and is taking on new stakeholders ahead of a potential IPO, according to its founder, Christoph Ostermann. …

  London / AP British Foreign Secretary Boris Johnson wrote an article urging that Britain stay in the EU just days before becoming the chief campaigner for Brexit, the Sunday Times newspaper reported. In the previously unseen column, Johnson asserted that remaining in the European Union would be “a boon for the world and for Europe”. He warned that Brexit …

  Lausanne / AFP US Secretary of State John Kerry was trying to build momentum behind a new drive to end the Syrian civil war on Sunday after high-level talks with Russia and the country’s neighbours. Kerry was due to fly to London to brief Washington’s European allies after “brainstorming” talks in Lausanne with the main players in Syria’s bloody five-year-old …