By Maureen O’Hare, CNN (CNN) — In travel news this week: railway ambitions in Europe, China and the Middle East, the delicious foods that Sweden does better than anywhere else, plus the Mongolian nomad family who’ve become an online hit. International train travel Adding Britain to your European rail vacation could get a little easier in the future. London St. Pancras, the United Kingdom’s only international train station, is working with the Channel Tunnel on opening up more services to France and planning new routes to Germany and Switzerland. The aim is to shorten journey times, improve timetable coordination and…