It loks like the future Russian GP at Sochi is in doubte following the death of its promoter and various other political problems. The French GP is not signed either with the new socialist government not keen on Paul Ricard leaving two future races in doubt. Bernie is ment to be quite worried about the Russian situation. There is also question marks over Korea. So Bernie's vision of 20 GP's is at risk.
http://plus.autosport.com/premium/fe...ndar-calamity/
I know this source is only available to subscribers but gives the background to the various events.