PRINCETON, NJ -- Americans' opinions of Egypt have become sharply more negative, with an 18-percentage-point drop in the country's favorable ratings -- from 58% in 2010 to 40% this year. For the first time since Gallup's initial measurement in 1991, more Americans have a negative than positive view of Egypt.These results are based on Gallup's annual World Affairs poll, conducted Feb. 2-5.The more negative rating of Egypt comes in the midst of extensive news coverage of the massiv...