Oliver L. North, host of FOX News Channel’s documentary series "War Stories," is temporarily off the air while he undergoes treatment for prostate cancer, POLITICO has learned. North’s prognosis is excellent, according to sources. North, the Iran-contra figure, became a popular conservative radio host and U.S. Senate candidate in Virginia in 1994. “War Stories” bills itself as profiling “the wars and warriors that shaped American military history.” When he visits military bases, soldiers and Marines scramble for the autograph of the man they call “Colonel North” but who introduces himself with a breezy, “Ollie North.” From North’s biography on FoxNews.com:...