Pakistan seems to have failed to seal the US $700 million deal for the purchase of eight F-16 fighter jets from the US following a row between the two countries over their financing, a media report said on Saturday.The Pakistani government was required to provide the Letter of Acceptance for purchase of the jets by May 24, but Dawn News reported that the document was not issued leading to expiry of the offer."Pakistan decided not to fully fund the case with national funds, so the terms of sale...