Sen. Lindsey Graham accused Russian hackers of targeting his campaign accounts in an interview on CNN Wednesday.

Graham, a former Republican presidential candidate, said the vendor that administered his campaign’s accounts was hacked in June.

Graham, who sits on the Armed Services Committee, floated the possibility of “crippling sanctions” to help rein in Russia.

“This is not a Republican/Democratic issue. I want to punish them for interfering in our elections, trying to destabilize the entire world,” Graham said.