Russian Knights suspends Farnborough participation due to administrative issues.
To visit foreign country all Russian military equipment must have a permit from Russian Government to get out of the country. This means that Russian Knights' Su-27 aircraft cannot departure to Farnborough International Air Show in UK until the permission granted.
In addition, the team's staff visas are not ready yet due to bad organization from Russian authorities. There is still a week to clear all confusions and team to fly to UK.