...Beijing may be using the shoal as a bargaining chip, rather than actively seeking to establish another military outpost there, some analysts said. “They imply that they may want Scarborough Shoal, then they will back off and show that they are a good international player,” said Bryan Clark, a former senior adviser to the chief of naval operations who is now an adviser at the Center for Strategic and Budgetary Assessments, a think tank in Washington.