A senior Iranian official told Al Jazeera that negotiators are very close to reaching a deal, and are currently working on a draft text; Another source said it is too early to say whether a serious, final agreement is in reach

At the same time, another source told Al Jazeera that it is too early to judge whether a serious, final agreement is within reach. "What we are seeing right now is intense mediation activity through senior officials from Pakistan. We know the Pakistani interior minister is in Tehran – and it’s his second visit within a week."