President Obama and Israeli Prime Minister Benjamin Netanyahu met Monday at the White House to discuss possible solutions to threats from Iran's nuclear program, pledging unity but signalling tension over how to proceed. Gwen Ifill reports.
The Republican Party's eventual nominee needs to secure 1,144 delegates. With wins in Michigan and Arizona Wednesday, Mitt Romney leads the GOP field with 135. Gwen Ifill discusses Super Tuesday, when a sizable 419 delegates are at stake, with Political Editor Christina Bellantoni and Frontloading HQ's Josh Putnam.