41.   Prosecutors say the former officer, Alexander Nikitin, harmed national security by reporting on Russian submarine accidents and the potential for nuclear contamination.

42.   Republicans have accused Clinton of risking American security by permitting the Chinese to launch satellites for an American company that contributed heavily to the Democrats.

43.   Republicans said such exports may jeopardize national security by giving China the ability to learn space technology that can improve its ballistic missile capabilities.

44.   Republican leaders say the export may have jeopardized U.S. security by helping China develop its missile capabilities.

45.   Sexton was hired for security by the company.

46.   Signs that some Asian nations may be sorting out their debt problems have also curbed the flight to Treasury securities by investors seeking refuge.

47.   She was a liberal Russian from St. Petersburg who spent many difficult years in Paris before coming to America and finding security by teaching at Princeton and Yale.

48.   Signs that some Asian nations may be sorting out their debt problems has also curbed the flight to Treasury securities by investors seeking a refuge.

49.   Some members of the food industry have already begun tightening security by conducting more microbial testing and looking for a wider range of disease-causing bacteria.

50.   Some tenants are expected to try to improve their security by seeking buildings with lower profiles, either in the city or the suburbs.