http://docs.google.com/viewer?a=v&q=cache:Sjk-9ylNzbcJ:csis.org/files/media/csis/pubs/031101_ruseur_wallander.pdf+weekness&hl=ru&gl=ru&pid=bl&srcid=ADGEEShP21Bz_rttu23eS93y8zKSiPvJ2QCU7IchTWES9H4SCGMabaH8W4pZl8Zw8ss9AaGUvUnqqCEdoF_acoz-KdOkrjYyKrkEd2p6XX5EBslc6XqJmFbelUMyOykBYAQh77hjlvLr&sig=AHIEtbRquACbbUUp0_N-R98foMyDG_H8dQ