MEGAN ROWLING GOVERNMENTS could face litigation if they do not step up efforts to stop their export credit agencies financing fossil fuel infrastructure and activities overseas, legal experts and climate activists warned on Tuesday. Advocacy group Oil Change International released a legal opinion saying the agencies - which provide loans, insurance and guarantees for businesses to invest abroad - should stop lending to oil, coal and gas projects around the world immediately. "If they continue doing this, they are breaching international law," said Jorge E. Viñuales, a professor of law and environmental policy at the University of Cambridge who authored the opinion…