White House: not ‘if,’ but ‘when’ on Syria strike
16:00NBC News’ Kristen Welker and Ayman Mohyeldin report on the latest developments out of the White House about the possibility of a military strike against Syria this weekend; then, Rep. Jim Langevin, D-R.I., and former State Dept. officer Joel Rubin discuss the debate over military intervention in Syria – and whether or not the president will go it alone without congressional approval.