Pakistan mulls options of fifth generation fighter jet from China-Russia .
The PAF does not have any experience dealing with Russia as a big-ticket fighter supplier. Even if Moscow is willing to sell aircraft, Pakistan would have to ensure that the support and maintenance package it needs to operate Sukhoi or Mikoyan jets is in alignment with its operational requirements. It cannot afford dips in operational availability due to delayed availability of spare parts. Moreover, India is a deeply engaged client in Russia, with multiple ongoing and prospective multi-billion-dollar aircraft and armour programs.