A nation must think before it acts.
Clinton Watts, a former F.B.I. agent, now with the Foreign Policy Research Institute, who has studied the Russian influence campaign, said that beyond damaging the American image, Mr. Putin had reasons to court particular subgroups.
“If he’s successful, it gives him an indigenous U.S. audience in support of his policies,” Mr. Watts said. “It also gives him leverage in talking to President Trump: ‘Why don’t you stop interfering in Ukraine, and we’ll leave your domestic audience alone.’”