this morning on "world news now" -- crisscrossing candidates, the campaigns zero in on key states with paul ryan facing protestors on the trail. >> we are learning details of the keynote speech at the republican convention. it is tuesday, august 14th. >> announcer: from abc news, this is "world news now." good morning, everybody. i'm john muller in for rob nelson. >> great to have you back. >> i'm paula faris. in a moment, rising republican star who is going to play a big-time role at the convention. and then, the first lady makes a late-night tv appearance talking about serious and of course the silliest late night tv. got to have a little fun. see gold medal winner, gabby douglas. so cute.