Chief political correspondent Rosemary Barton speaks with this week's Sunday Scrum — Ryan Tumilty, Toronto Star political reporter, Marie Vastel, editorial writer for Le Devoir, and Robert Benzie, Queen's Park bureau chief for the Toronto Star — about the federal government announcing negotiations to buy surveillance aircraft from Swedish-based Saab. Plus, the Sunday Scrum looks at what Ottawa is calling a 'milestone' deal to sell Canadian LNG to Germany, and why climate advocates are