Climate group, vets defend Graham in S.C.

“As U.S. military veterans, we share Senator Lindsey GrahamLindsey GrahamMcCain returning to Senate in time for health vote Week ahead: Senate defense bill faces delay Week ahead: Uncertainty surrounds ObamaCare repeal vote MORE's strong belief that our national security depends on more than troops and arms. America must also reduce its dangerous dependence on foreign oil and develop its own alternative energy sources,” states the ad.

The ad is paid for by the Pew Project on National Security, Energy and Climate and is signed by 54 South Carolina vets.

“That's why our military branches are moving swiftly to improve their energy efficiency and deploy clean energy technologies. And it's why Senator Graham is working to forge a bipartisan plan that moves our country toward energy independence,” it continues. The ad also notes that the Defense Department believes climate change presents security risks.