11.   Thai authorities allowed Wang entry only after extracting pledges that he would not stage political protests.

12.   The U.N. refugee agency said last week that it had extracted a pledge from Moscow not to force any refugees to return.

13.   They extracted a pledge from Katz not to ask Vanunu anything about the Dimona reactor.

14.   Before the air campaign began, the United Nations extracted a pledge from Sarajevo that its forces would not take advantage of the bombing, but only specified Sarajevo.