Members of the Muslim community leave the East London Mosque after prayers before the start of the holy month of Ramadan in June 2014 in London, England. The mosque has an estimated 7,000 worshippers. Rob Stothard/Getty Images hide caption

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More than 600 Porto city buses and taxis have been fitted with routers to provide free Wi-Fi service. It's being touted as the biggest Wi-Fi-in-motion network in the world. Sérgio Rodrigues/Veniam hide caption

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Workers stand next to a gas pipeline not far from the central Ukrainian city of Poltava in June 2014. Ukraine imports much of its gas from Russia, which is once again threatening to cut off supplies in a dispute over payments. Sergei Supinsky/AFP/Getty Images hide caption

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A handout image provided by the Israeli Government Press Office shows Prime Minister Benjamin Netanyahu and his wife, Sarah, leaving Tel Aviv on their way to Washington Sunday. Handout/Getty Images hide caption

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Members of Iraqi security forces drive toward an area south of Tikrit, Iraq, over the weekend. An Iraqi force has launched a military offensive, hoping to push ISIS out of Tikrit. AHMAD AL-RUBAYE/AFP/Getty Images hide caption

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