Related by context. Frequent words. (Click for all words.) 42 overland 38 al Qaeda operatives 38 Al Qaeda operatives 36 clandestine 35 smuggling routes 35 tunnels 34 Al Queda 33 al Qa'ida 33 jihadi 33 porous border 32 Al Qaeda 32 materiel 32 underground tunnels 32 al Qaeda 32 operatives 31 spies 31 lawless tribal region 31 passageway 31 extremist groups 31 conduit 31 fake passports 30 border 30 routed 30 Qods Force 30 Quds Force 30 routing 30 narcotics traffickers 30 smugglers 30 covert 30 smuggler 30 sympathizers 29 money launderer 29 bridgehead 29 resupply 29 contacts 29 smuggled 29 Euphrates River valley 29 drug traffickers 29 informants 29 sleeper cells 29 conduits 28 smuggling 28 counterterrorist 28 narco traffickers 28 porous borders 28 mules 28 clandestinely 28 couriers 28 treacherous terrain 28 northward 28 shadowy 28 waterway 28 mountainous terrain 28 CIA 28 circuitous route 28 border crossing 28 gunrunning 27 covert CIA 27 passageways 27 terrorist 27 Smugglers 27 lawless tribal regions 27 eastward 27 narcotics trafficking 27 reconnaissance missions 27 safehouses 27 Routing 27 Arabian peninsula 27 antiterrorist 27 coded messages 27 terrorists 27 intermediaries 27 JSOC 27 hawala 27 infiltrate 26 canals 26 via 26 convoys 26 gateway 26 drug smugglers 26 canal 26 go betweens 26 tunneled 26 funnel 26 secretly 26 route 26 Mexican drug cartels 26 lawless tribal belt 26 spy 26 hideouts 26 narrow waterway 26 Pakistan lawless tribal 26 counterintelligence 25 Shia militia 25 cables 25 CIA operative 25 trans shipment 25 drug barons 25 semi autonomous tribal 25 precursor chemicals 25 arms caches