McCain, Again the Maverick, Challenges President Trump

Plus, he said he has good relations with key Trump security nominees: Defense Secretary Jim Mattis, Homeland Security Secretary John Kelly and national security adviser Michael Kelly. White House chief of staff Reince Priebus, he noted, was Wisconsin chairman of his 2008 presidential bid, and he has traveled abroad on congressional delegations with Vice President Mike Pence.

.. Mr. McCain also noted that Breitbart News, the site previously overseen by top Trump adviser Stephen Bannon, has “attacked me incessantly for years.”

.. But the area that seems to most bother Mr. McCain isn’t personal; it is a seemingly deep disagreement with the new president over his desire to strengthen ties with Russian President Vladimir Putin.

The last two American administrations, of George W. Bush and Barack Obama, similarly started “with the mistaken belief there would be improved relations with a hardened KGB colonel,” Mr. Putin, only to be disappointed, he said.

“The difference now versus before is he’s invaded a country”—Ukraine—and, he added, has tried to influence an American election.