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Updated: 1 hour 24 min ago
President Barack Obama cautioned against imposing new measures that could discourage American doctors and nurses from traveling to West Africa to fight Ebola.
The Department of Homeland Security is increasing security at federal buildings as a result of growing concern over lone-wolf terrorist attacks such as last week’s shooting in Ottawa.
Computer-security experts say they found what they describe as a sophisticated cyberweapon on a network at a U.S. firm harboring military secrets, and that the spy tool was built during Moscow working hours.
U.S. Secretary of State John Kerry visited Canada’s capital to express the U.S.’s solidarity with Canada and pledge to work even more closely with its northern ally in the fight against terrorism.