Do Ferrari need rules of engagement? F1 Q&A

Given that Yamaha have withdrawn from MotoGP in Qatar (and, I understand, much of the media aren't going), why is F1 still so intent on going? The US mid-terms are potentially a trigger point. The risk seems too high. - Richard

This weekend's Qatar MotoGP has been a subject of controversy in motorcycle racing in the context of the war in the Middle East.

First, the vast majority of riders wrote a letter to the sport's bosses saying they would prefer not to race there, and at the weekend Yamaha pulled out of the race, citing a company-wide travel policy.