Coral Springs , Florida . After leaving the agency , his wife says , he worked as a security consultant specializing in cigarette smuggling . Over the last year and half , Levinson says she has done everything she can to draw attention to her husband 's disappearance . She has given interviews , met with U.S. State Department officials , set up a Web site -- www.helpboblevinson.com -- and staged a rally . She even has offered a $ 5,000 reward , aimed primarily at Iranians who might have information about her husband . Has it yielded any tips ? `` No , '' Christine Levinson says . `` Nothing . '' Last year , she traveled to Iran to try to retrace her husband 's steps . Back then , Iranian officials told her they would investigate and report back to her . She says she has n't heard a word . `` They told me when they have some information , they will let me know and in the meantime will continue to search for Bob , '' Levinson told CNN . She has denied that her husband was doing business for the US government when he
-LRB- CNN -RRB- -- Christine Levinson went to the United Nations on Monday to ask questions about her husband , Bob , a former FBI agent who vanished in Iran last year . Christine Levinson has sought help from Zalmay Khalilzad , the U.S. ambassador to the United Nations . Levinson flew to New York with three of her seven children in hopes of meeting the one man she hoped could really get things moving -- Iranian President Mahmoud Ahmadinejad , who is at the United Nations for a speech he is scheduled to deliver Tuesday afternoon . Ahmadinejad declined to meet with her . `` I 'm disappointed , '' she says . Levinson did meet , however , with the Zalmay Khalilzad , the U.S. ambassador to the United Nations . `` He said he would do whatever he could to help me , '' she told CNN . Levinson went to the United Nations with her children -- Susan , 31 , Sarah , 28 , and Douglas , 14 . Her husband disappeared in March 2007 while on a business trip to the Iranian island of Kish . Bob Levinson is a retired FBI agent from