In the last week, there have been media reports questioning the future of the British Grand Prix and the announcement of a 21-race calendar for the 2016 season.
In combination with this weekend's stop on the schedule - the Russian Grand Prix - it is a reminder of the direction in which Formula 1 appears to be headed.
More of the historic European events that reflect the essence of racing are disappearing off the F1 schedule to be replaced by big state-funded projects that fail to deliver the same kind of racing and atmosphere.
That the F1 schedule is in a state of major flux is without doubt; whether that is necessarily a good thing is a different matter.
Does F1 need European races?
Europe is where F1's heart is - in terms of the teams, the drivers and its core audience. And yet the future of a number of countries as race holders is in doubt.
Silverstone has a contract to stage the British Grand Prix that lasts until 2026, with the first break clause after 2019, but that has not stoppedquestions about its future.
Monza in Italy, the oldest race of them all, has one more year on its deal and there has so far been no agreement on the financial conditions for a new one.
Germany dropped off the calendar this year because of financial problems at the Nurburgring and there are doubts about its long-term future after a poor crowd at the other venue, Hockenheim, in 2014.
These are all circuits with a long and rich history. Nurburgring has held 40 grands prix; Hockenheim 34; Silverstone 49. Monza has been on the grand prix calendar almost uninterrupted since 1922.