Sen. Lindsey Graham (R-SC) blasted President Barack Obama’s plan to defeat ISIS during an appearance on Fox News Sunday, calling the commander-in-chief “disingenuous and delusional” and warning that Americans will be “killed here at home” unless he sends ground troops into Iraq and Syria to defeat the terrorist threat.

Comparing the estimated 30,000 ISIS fighters to the Nazis, Graham warned that “this idea we’ll never had any boots to defeat them in Syria is fantasy.” He argued that given the growth of the “radical Islamic army” and its control of territory in northern Iraq and Syria, “it’s going to take an army to beat a army.” “This is ISIL versus mankind,” he said, using another acronym for the group.

“To destroy ISIL, you have to kill or capture their leaders, take back their territory, cut off the finances and destroy the capability to regenerate. This is a war we’re fighting not a counter terrorism operation,” Graham continued. “This president needs to rise to the occasion before we all get killed back here at home.”