http://www.foia.cia.gov/Top25PhrasesMonthly.asp 呵呵，最近几个月在cia的网站上搜索的关键词:ghost: soviet analysis: 1647 ufo: 1066 iran: 690 cuba: 652 south africa: 457 assassination: 400 brazil: 367 iraq: 366 area 51: 364 soviet+analysis: 358 afghanistan: 352 bay of pigs: 323 jfk: 304 israel: 295 chile: 294 kennedy: 280 vietnam: 244 nicaragua: 231 france: 226 poland: 215 pbsuccess: 212 nato: 202 soviet: 198 korea: 175 turkey: 170