US Secretary of State Marco Rubio has called Iceland a country whose strategic weight keeps growing. He made the remarks while in the country on an official visit, with his departure scheduled for today. The brief stop put a senior American official in a capital that Western planners watch closely for its North Atlantic position. Iceland sits on the routes between North America and Europe, a geography that has kept it on NATO's map for decades. Washington and Reykjavik have cooperated on defense since the middle of the last century. Arctic developments have lately pushed renewed attention onto the monitoring work done from the island. Neither side published a detailed account of what was discussed during the visit.