Balloons, for instance, have the highest, since they have the least control over direction. Crowded airspace requires that the pilot take direction from traffic control and may not deviate without declaring an emergency. Airlines are installing collision warning radar systems. A pilot is required to see and be seen. The ultimate responsibility for safety rests in his hands.
American rules are universal around the world.
English is the required language at international airports. French Canadians caused an huge flap once by instituting a policy that French must be spoken by pilots landing in Quebec. A threatened boycott by the airlines quickly ended this nonsense. The Chinese air force pilot, Wang Wei, broke every rule regarding aircraft separation and died in the process. The charge that our Navy pilot would risk his crew to deliberately ram his jet is ludicrous.