Republicans believe political turmoil undermines Obama . But GOP yet to resolve its own argument on national security . Rubio 's fellow Floridian Jeb Bush has yet to lay out his foreign policy since moves to explore a possible presidential campaign , other than to slam Obama 's plan to reestablish diplomatic relations with Cuba . McCain , however , slam the approach .
Republicans believe political turmoil undermines Obama . But GOP yet to resolve its own argument on national security . McCain , however , slam the approach .