By Madeline Coleman The two-time world champion wrote, “It is an important day for the sport as this decision will dictate if we are going in the right direction.” Fernando Alonso warned that the FIA’s decision on Alpine’s protest would have implications on Formula One’s future. The Spaniard was dealt a post-race penalty stemming from a Haas protest that dropped him from a seventh-place finish to 15th at the U.S. Grand Prix this weekend. Despite being sent airborne from a collision with future teammate Lance Stroll, Alonso was able to finish the race, but his car was damaged. His right-wing mi…