Having been away recently myself, I’ve been slow to catch up with a podcast from Telegraph Travel, “Edgelands”, based on a 5,000-mile journey that Ash Bhardwaj is making from Arctic Norway to Moldova through countries that border Russia. For the first episode, he reported on the Seto people, who, in the days of the Soviet Union, travelled freely between Estonia and Russia. Since 1991, however, when the Iron Curtain was blown down, their lives have grown more, rather than less, complicated. As I listened, I kept thinking of those people living on the currently soft border on the island of Ireland…