OT
Long-term tie-in with Russia via defense systems can not be good for Pakistan's recently independent foreign policy choices. There is already a sense of unease among Pakistan's close friends because of certain foreign policy choices.
One can trace this convergence to JF-17's use of RD-93 and Putin's decision to allow its re-export to Pakistan.
Already there is also talk of SU-35 being a point of discussion between Pakistan & Russia.
Just as Pakistan was a conduit for establishment of Sino- US relations, China has normalized relations between former adversaries.