In the space of less than a week, the Stormont talks process has been surrounded by contrasting periods of considerable optimism, huge anticipation, growing concern and ultimately bitter disappointment.
The climate has largely been shaped by changes of mood within the DUP so it was probably appropriate that the end of the present round of discussions was signalled yesterday by a sharply negative statement from Arlene Foster.
All the indications are that the main parties, as well as the Irish and British governments, were ready to finalise a deal for the restoration of devolution which was vetoed at the 11th hour by the DUP leader's internal opponents.
A return to the negotiating table is inevitable sooner or later, but Mrs Foster or her successor will plainly go there in a much weakened position. The DUP has an unusual way of doing business.
