Hitler's plan to attack Poland predates the Molotov-Ribbentrop pact, so that deal, shameful though it was, did not provide the definitive go-ahead for the invasion.
China's state council has given a definitive go-ahead to the project, even though the feasibility studies for Xiangjiaba are "still being written up", according to a statement.
Recently, however, that tidy division of the market, and its main players, into distinct segments has become increasingly blurred, first with the emergence of Embraer's E-170 and E-190 family of four medium-range passenger jets in the 70- to 120-seat sector — straddling the regional and mainstream markets — and then with Bombardier's definitive go-ahead for its C Series jet.
Some final software checks are still being carried out and a more definitive "go, no-go" decision will be made next week.
But to save us from some blind traipse into a future of mephedrone children that make those flippered thalidomide babies look like cute, aquatic Pokémon, journo-sleuths Max Daly and Steve Sampson have put their combined 20-odd years of covering the drug trade into a single, definitive go-to guide called Narcomania.
It's funny to me calling the competition a "War" as everyone with whom I have spoken seems incredibly mellow and down-to-earth but there is a potential definitive moment going on here for that industry.
Modern Americans looking for this kind of definitive judgment go wrong, however, in concluding further that the St. Andrew's cross was only a symbol of slavery.
"The Letters of Robert Frost, Volume I: 1886-1920," edited by Donald Sheehy, Mark Richardson, and Robert Faggen, part of a heroic effort by Harvard University Press to collect all Frost's writings in a definitive edition, goes some way toward filling this imaginative deficit.
As far as Dishonored: Definitive Edition goes, I suspect we have a very straight-up, no-frills port on our hands.
I think the other side of the spectrum as far as definitive endings go, would maybe be the 'Six Feet Under' finale, in which you flash-forward and see all the characters you've spent time with actually die.
