As Obama Presses Vietnam on Rights, Activists Are Barred From Meeting - The New York Times: "Another activist, Nguyen Quang A, 69, a businessman, wrote on Facebook on Monday night that the police had surrounded his house in Hanoi and that he could not leave. Efforts to reach Mr. Quang A by telephone on Tuesday morning were unsuccessful. Mr. Quang A said in an interview last week that an official at the American Embassy had invited him to meet Mr. Obama.
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