Senator John McCain\u2019s verdict on President Donald Trump\u2019s performance at the summit in Helsinki was brutal, but just: \u201cNo prior president has ever abased himself more abjectly before a tyrant.\u201d Standing alongside Russian President Vladimir Putin on Monday, Trump failed to support his own government's unequivocal assessment that Russian military and intelligence agents mounted a cyberattack against the U.S. throughout the election of 2016 \u2014 an elaborate effort to sabotage America\u2019s democracy. Only a few days earlier, a grand jury convened by special prosecutor Robert Mueller had indicted a dozen Russian agents for the attack. The indictment identifies criminal details down to individual keystrokes on Russian computers. U.S. Director of National Intelligence Dan Coats, a former Republican senator, said Friday, \u201cThe warning lights are blinking red again. Today, the digital infrastructure that serves this country is literally under attack.\u201d Asked about those attacks, Trump said, \u201cMy people came to me, Dan Coats came to me and some others, they said they think it\u2019s Russia. I have President Putin, he just said it\u2019s not Russia. I will say this: I don\u2019t see any reason why it would be.\u201d The implication is that Putin is a more credible source of information about Russian skullduggery than the combined intelligence agencies of the U.S. government. Trump also spoke warmly of Putin\u2019s \u201cincredible offer\u201d to have Russian investigators help out with the case. Incredible is the word. Discussing why relations with Russia are bad, the U.S. president, in a tweet, blamed \u201cU.S. foolishness\u201d \u2014 as opposed to the assault on America, Russia\u2019s invasions of Ukraine and Georgia, the killing of innocents in Syria, and efforts to undermine democracy in Europe. In all, it was an astonishing display, and one that should leave the president\u2019s supporters in Congress and the nation alarmed. A country can hardly defend itself against future assaults if its president can\u2019t acknowledge the ones that have already taken place.