"I think he is looking at it, and I am strongly encouraging him to take a look at it," said Arizona Senator and former GOP presidential nominee John McCain, of a possible presidential bid by his colleague and friend Senator Lindsey Graham of South Carolina, (R).
"I know of no one who is better versed and more important on national security policy and defense than Lindsey Graham, and I don't think these challenges to our security are going away," added McCain.
Graham floated the possibility of a run in an interview with the Weekly Standard last month, telling the magazine he'd be interested in running to guide the conversation on national security.
"If I get through my general election, if nobody steps up in the presidential mix, if nobody's out there talking — me and McCain have been talking — I may just jump in to get to make these arguments," Graham said.
As the libertarian wing of the GOP has gained prominence, led by expected 2016 presidential contender Sen. Rand Paul, members of the party's more hawkish old guard have floated presidential runs to offer a contrasting voice in key national security debates.