Candidates to square off in CNN national security debate tonight – are any of the candidates commander-in-chief material?

The Republican presidential candidates face off once again Tuesday night in the CNN National Security Debate. CNN is teaming up with leading Republican-leaning think tanks Heritage Foundation and American Enterprise Institute to host a debate that focuses heavily on foreign policy issues. The debate will also address top economic concerns, including the failure of the Congressional super committee to find agreement to cut $1.2 trillion from the country's long-term debt. The debate is the 11th major showdown between the Republican candidates.

The Heritage Foundation's James Carafano and the American Enterprise Institute's Marc Thiessen tell Carol Costello that tonight's debate will show voters who really is commander-in-chief material.