President Trump appeared to concede Monday that Russia tried to help him win the 2016 election, and he blamed former President Barack Obama for not only failing to stop the foreign meddling but for obstructing an investigation into the hacking.

In a series of tweets, Mr. Trump sought to turn the tables on Democrats by accusing President Obama of having “colluded” with Moscow or having “obstructed” the U.S. investigation into Russian interference by failing to retaliate against the Kremlin until after the election. Democrats have been leveling similar charges of collusion and obstruction against Mr. Trump for months.

“The reason that President Obama did NOTHING about Russia after being notified by the CIA of meddling is that he expected Clinton would win ” Mr. Trump tweeted. “He didn’t ‘choke,’ he colluded or obstructed, and it did the Dems and Crooked Hillary no good.”

OK, now we have passed from stupidity into child’s play in the sandbox. Are you, kidding, ‘Mr. President?’ Not only do you need to grow up, you need to grow a ‘pair.’