If the politicians remain stubborn the constitution won't be written on time.
If not, then what?
According to the interim constitution, the deadline can be extended by six months, within which time the constitution must be completed. There's no alternative to that.
But isn't that only possible during an emergency period?
If the constitution isn't written by the deadline, then it will be an emergency. That's why when that situation arises, political understanding and consensus will be necessary. Otherwise we will be in dire straits.
Constitution 2010, Nepali Times coverage of issues related to writing the new constitution