Mark Preston is CNN’s executive director of political programming and senior political analyst. He hosts “Full Stop with Mark Preston” on SiriusXM POTUS 124. The full interview can be heard on Saturday at 12 p.m. ET, Sunday at 1 a.m. ET, and Sunday at 5 p.m. ET. Follow him at @prestonCNN.
(CNN)Without hesitation, George Shultz leaned forward in his chair and named two issues in a solemn tone: nuclear weapons, climate change. The subjects may seem oddly paired, unless you knew I had just asked him, “What keeps you up at night?”