Related by context. Frequent words. (Click for all words.) 49 border 48 Durand Line 47 porous border 46 borders 43 border crossing 42 porous borders 42 sole superpower 40 Prime Minister Stephen Harper 40 Doer 40 border crossings 39 lawless tribal areas 38 borderland 38 heavily fortified border 38 Northwest Passage 38 softwood lumber dispute 38 superpower 38 Prosperity Partnership 38 tribal regions 38 lawless tribal belt 38 busiest waterways 37 increasingly interdependent 37 Canada 37 steadfast ally 37 democracies 37 Stephen Harper 37 Taleban insurgents 37 Osama bin Laden 37 Checkpoint Charlie 37 United States [002] 37 Afghanistan 36 waterway 36 Pakistan 36 Af Pak 36 Canadians 35 Prime Minister Jean Chretien 35 closest ally 35 Syria 35 binational 35 Prime Minister Jean Chrétien 35 militant sanctuaries 35 NAFTA 35 Western Hemisphere Travel 35 warring drug cartels 35 transatlantic alliance 34 smuggling routes 34 Pakistanis 34 lawless tribal regions 34 drug cartels 34 Israel 34 bin Laden 34 NEXUS 34 strait 34 territorial sovereignty 34 Malacca Strait 34 world 34 St. Croix River 34 drug traffickers 34 post-#/# [001] 34 multi polar 34 Diefenbaker 34 landlocked 34 Siachen glacier 34 drug lords 34 Vicente Fox 33 maritime boundary 33 biggest polluter 33 aboriginal peoples 33 softwood lumber 33 Rideau Canal 33 drug smugglers 33 Yalu River 33 Lake Champlain 33 prime minister Jean Chretien 33 chokepoint 33 Ledra Street 33 Arabs 33 Great Lakes basin 33 US VISIT 33 Wagah 33 WHTI 33 circumpolar 33 Untied States 33 banana republic 33 Mr. Chrétien 33 sovereignty 33 narco trafficking 33 Jack Layton 33 Malacca Straits 33 Piscataqua River 33 narco traffickers 33 Jean Chrétien 33 checkpoints 33 Demilitarized Zone 33 Siachen Glacier 33 byway 32 Indo Pak border 32 superhighways 32 seaway 32 country 32 American exceptionalism 32 thruway