Senator and Republican presidential candidate Rick Santorum (R-PA) joins Morning Joe and talks with Mike Barnicle about gun control as well as his disagreement with President Barack Obama’s Middle East strategy. “You’ve said in the past that we have a leader who refuses to be truthful with the American people about the threat we’re facing in the Middle East—what specifically is the President of the United States not being truthful about?,” asks Mike of Santorum. Hear Santorum’s answer here on MSNBC.