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WASHINGTON, D.C. — Talks between Iran and the U.S. ended Thursday amid President Donald Trump’s 10-15 day “deal or bad things” ultimatum. In his State of the Union speech this week, Trump vowed never to let “the world’s number one sponsor of terror” get nukes — after promising protesters in Iran that “help is on the way.” Canada faces risks from any strikes — terrorism, oil shocks, diaspora backlash and NORAD strain — but the fallout will depend on their scope. Ottawa opposes kinetic action but has imposed new sanctions on Iranian officials and said it will not have diplomatic...