> ABC's Charlie Gibson anchors World News from London Tuesday-Thursday. Correspondents Jake Tapper, Jim Sciutto, Yunji de Nies will report from the G20 summit as well. ABC News Radio's Ann Compton will be traveling with Pres. Obama.

> Katie Couric anchors CBS Evening News from London Tuesday-Thursday. Other correspondents will contribute from London for CBS' "The Global Challenge: Recession to Recovery," coverage as well.

> Francine Lacqua and Peter Cook anchor from the Summit for Bloomberg TV. Hans Nichols travels with Pres. Obama and Ryan Chicote follows onto the NATO summit.

• Earlier: NBC's G20 coverage