Just weeks after delaying a purchase of new F-16 fighter aircraft in order to divert resources to deal with a devastating earthquake, Pakistan is eyeing the near-term acquisition of as many as 25 used fighters while waiting on the rest of the F-16 package, according to officials familiar with the country's plans. Pakistan previously planned to buy as many as 50 new fighters in addition to the 25 used F-16s. Sources familiar with the pending request said Islamabad is looking...