Britain and its allies should consider imposing lasting limitations on arms sales as part of a new relationship with Russia following the "outrageous" annexation of Crimea, Foreign Secretary William Hague said in an article for the Sunday Telegraph.
"This would involve Russia being outside some international organisations, facing lasting restrictions on military cooperation and arms sales, and having less influence over the rest of Europe," he wrote.
We would need to boost investment in gas interconnections and terminals in Europe, and develop indigenous European energy supplies for countries wishing to develop their own resources, such as shale gas.
And it would mean helping Ukraine and neighbourhood countries to liberalise their energy markets, increase energy efficiency and ensure more resilient energy supplies. Russia's actions in Ukraine should make it much more likely that the European Union takes such decisions.