." >>> tonight president trpowing to keep american troops in afghanistan. reversal from his campaign promise. >> a hasty withdrawal would create a terrorist would instantly see just as happened september 11th. >> and his stern warning to other nations. >> plus we're in the shadow along the path of totality for today's rare and majestic solar eclipse, all across america, the spectacle drawing millions. >> and total eclipse of the heart ♪ total eclipse of the heart. >> her smash hitle she sings as the cosmic phenomenon reaches its peak. >> and a couple making their own mark. but first night at five. >> numr ♪ or joining us. we begin with breaking news on the nation's long war in afghanistan. president trump i a primetime address declaring the u.s. must continue the fight.ces of rapid exit are both predictable and unacceptable. 9/11, e worst terrorist attack in our history was directed from afghanistan.us tn by a government that gave comfort and shelter to terrorists. >> and our chief global affairs analyst joins us>> pres internal debate, president trum war i