KEFLAVIK, ICELAND — Prime Minister Justin Trudeau landed in Iceland Sunday where he will be a guest at the annual meeting of Nordic leaders as uncertainty looms over the future of the Arctic and there are heightened concerns about global security fol KEFLAVIK, ICELAND — Prime Minister Justin Trudeau landed in Iceland Sunday where he will be a guest at the annual meeting of Nordic leaders as uncertainty looms over the future of the Arctic and there are heightened concerns about global security following internal strife in Russia. The Nordic summit will include leaders from the host country as well…