Since U.S. President Donald Trump's barrage of threats to seize Greenland, authorities on the frozen island have been seeking help from a northern ally: Canada.
A reserve unit of the Canadian armed forces called the Rangers has long maintained a year-round presence in mostly inaccessible Arctic communities. For three years, authorities in Greenland and Denmark have consulted with Canadian officials on how to set up their own version of the Rangers - conversations that grew more urgent with Trump's threats and growing fears of Russian hostility in the Arctic.
