'The conflict started about European integration and the question of whether Ukraine should go east or west, but through the course of events it has united Ukrainians from the two sides of Ukraine against corruption and against the excessive use of force,' says Orysia Lutsevych.
'I agree with president Obama – a 50 per cent chance of succeeding is about right,' says Sir Richard Dalton. 'It is possible. The [November agreement] pointed the way to success . . . but hardliners in Washington and Tehran are going to be hard to satisfy.'