Stormont talks to be 'intensified' says Theresa Villiers. What does it mean? @BrianPJRowan explains

So the talks between the main parties at Stormont are going to be intensified. So says Secretary of State Theresa Villiers. She was talking on the Sunday Politics programme. But what exactly does intensifying the talks mean? Journalist and veteran talks-watcher Brian Rowan might help us here...