he United Arab Emirates arranged a secret meeting in January between Blackwater founder Erik Prince and a Russian close to President Vladimir Putin as part of an apparent effort to establish a back-channel line of communication between Moscow and President-elect Donald Trump, according to U.S., European and Arab officials. The meeting took place around Jan. 11 — nine days before Trump’s inauguration — in the Seychelles islands in the Indian Ocean, officials said. Though the full agenda remains unclear, the UAE agreed to broker the meeting in part to explore whether Russia could be persuaded to curtail its relationship with...