A court in the United Kingdom on Monday ruled that WikiLeaks founder Julian Assange can appeal his ordered extradition to the United States. Assange, 50, is accused by American authorities of helping a former intelligence analyst obtain classified information before publishing the information on WikiLeaks for anybody to access, a series of actions U.S. prosecutors say endangered national security and the lives of sources who were named in the documents. The High Court in London ruled last year that the assurances given by U.S. authorities were sufficient to guarantee that Assange would be treated humanely, overturning a lower court ruling that concluded sending Assange to the United States would be “oppressive.” Assange appealed the latest ruling several days later. In a decision released Monday, the high court said Assange can appeal to the UK Supreme Court, but only if the court agrees. “The respondent’s application to certify a point of law …