Tick tock, tick tock. Only four days to go until we find out whether the ICAO 37th Assembly in Montreal resulted in a global framework for reducing emissions from aviation.
Conclusions will be presented on 8th October. Here's IATA's final plea, in which it points out that if no agreement is reached this time around, "the next opportunity is 2013".
And here's what we had to say in the comment section of this week's Flight International, headlined "Do it or rue it".
But as my colleague Lori Ranson - who's been in Montreal attending the summit - reported here, it will be "difficult" to get so many nations to agree on such a defined list of targets.
All will become clear at the end of this week.