In trying to outline how he would defeat the threat, Trump himself launched several other false claims on Monday.
He said Clinton and Obama sought to install a democracy in Libya and pushed for immediate change in leadership in Syria, accusing the pair of embarking on a "nation-building" strategy that few Republicans would ascribe to Obama's intervention-averse administration.
In contrast, he advocated his own vision for U.S. foreign policy that included the suggestion of a U.S. takeover of Iraq's oil reserves.
A look at some of Trump's comments and how they adhered to the facts: