We were a private 707-320C, fully loaded with a ground to air guided missile system (missiles, warheads, launch system etc.) from Singapore to Dubai.
While flying in the Madras FIR we had an airmiss with a KLM 747, flying eastwards, that was cleared by Madras to climb through our flight level.
At the end of the aircraft to aircraft conversation with KLM, regarding who would report the incident, the KLM skipper said 'that could have been a very serious accident' we replied 'you have no idea how serious'!!!!!