31.   Airlines also face the thorny issue of travelers who purchased tickets before the expiration of the taxes.

32.   After weeks of stalled progress, both sides have worked to overcome about a half dozen thorny issues.

33.   Against this backdrop, Rivers raises thorny issues.

34.   But as a highly regarded executive, the toast of the local digital universe, he could sidestep the thorny issues of teendom.

35.   But Bush spokesman Ray Sullivan refused to make any promises, or to even get involved in the thorny issue.

36.   But diplomats cautioned that many thorny issues remained, including the details of the map of the new federation and control of Sarajevo.

37.   But facing the past, and the role in it of individual Germans, remains a thorny issue.

38.   But first they would need to resolve at least two more thorny issues, including details on education spending.

39.   But getting more specific than that raises some thorny issues, he said.

40.   But Medex remains a thorny issue.