Related by context. Frequent words. (Click for all words.) 55 terrorist attacks 53 attacks 51 suicide hijackings 49 suicide bombings 48 trans Atlantic airliners 48 hijackings 47 Casablanca bombings 46 hijacked airliners 46 hijacked planes 46 hijacked airplanes 45 terror 44 terror plots 44 bombings 44 USS Cole bombing 43 Twin suicide bombings 43 suicide bombers 43 attack 43 harboring al Qaeda 42 bombing 42 USS Cole 42 terrorist 41 airliners 41 jetliners 41 commercial airliners 41 suicide 41 suicide bombing 41 anthrax laced letters 41 Madrid commuter trains 41 liquid explosives 41 Omagh bomb 40 Tylenol poisonings 40 anthrax mailings 40 Omagh bombing 40 transatlantic airliners 40 Al Qaida operatives 40 destroyer USS Cole 40 Bali bombings 40 Bali blasts 40 counterterrorism 40 Beslan tragedy 39 self proclaimed mastermind 39 Jakarta JW Marriott 39 hijackers 39 Chechen warlord Shamil Basayev 39 cyberattack 39 terrorist outrages 39 hijacking 39 armor piercing bombs 39 packed commuter trains 39 Blackwater Worldwide guards 39 anthrax powder 39 warship Cheonan 39 Slammer worm 39 Al Qaeda operatives 39 Pan Am airliner 39 Suicide bombings 39 al Qaeda sympathizers 39 terrorists 39 assassination attempts 38 assassinations 38 airliner bombing 38 al Qaeda operatives 38 Mumbai carnage 38 mastermind Khalid Shaikh Mohammed 38 simultaneous bombings 38 Chechen separatists 38 hijacked jetliners 38 harshest interrogation 38 Pan Am jet 38 sarin gas 38 anthrax 38 bioweapon 38 blind sheik 38 Pan Am bombing 38 Female suicide bombers 38 commando raids 38 VBIED 38 professed mastermind 38 Cuban jetliner 38 Palestinian intifada 37 airliner 37 Islamic militants 37 nightclub bombings 37 homegrown terrorists 37 ecoterrorism 37 shooting rampages 37 deadly 37 atrocity 37 Kassam rocket attacks 37 foiled plot 37 al Qaida operatives 37 terrorism 37 Uighur separatists 37 foiled plots 37 Bali bombing 37 Sunata 37 suicide attackers 37 detonate liquid 37 twin suicide bombings 37 detonate dirty 37 commercial jetliners