Yes, it is an alarming development because when they get 126 such capable aircraft, then we also need to have something matching to counter that threat,' the air chief maintained.

The IAF is set to begin field trials later this year of the six combat jets that are in contention for its order, which might even go up to 200 to counter depleting force levels.

The first of the fighters are likely to be inducted in 2012.

Referring to the induction of the JF-17 Thunder fighter aircraft co-produced with China, Suleman said the PAF plans to eventually induct up to 250 planes, making it the backbone of its inventory.

However, there was still a requirement for a more advanced fighter aircraft, as the PAF prepares to counter the future edge the IAF may acquire once it completes the planned purchase of 126 MMRCAs, the air chief maintained.