After Donald J. Trump suggested he had threatened to encourage Russia to attack “delinquent” NATO allies, the response among many Republican officials has struck three themes — expressions of support, gaze aversion or even cheerful indifference. [cut] In a phone interview on Sunday, Senator Lindsey Graham of South Carolina seemed surprised to even be asked about Mr. Trump’s remark. “Give me a break — I mean, it’s Trump,” Mr. Graham said. “All I can say is while Trump was president nobody invaded anybody. I think the point here is to, in his way, to get people to pay.” [cut] Senator...