(Editor's Note: This story was updated at 11:35 a.m. to include a statement from F-35 manufacturer Lockheed Martin.) In a surprise move, South Korea's government has decided to cancel its competition for a new fighter aircraft and re-evaluate its options and requirements. Boeing's F-15 Silent Eagle was the sole remaining candidate in the competition and was expected to be named the winner of a $7.7 billion deal this week. Defense News reported on the decision of the country's...