( CNN) The Washington Post published yet another bombshell report about our President Monday. The story, citing unnamed US officials, alleges that Donald Trump gave visiting Russian officials details of intelligence on ISIS and a plot to blow up airliners use laptops — information that had been given to the United States by an ally.

Russia’s Foreign Minister Sergei Lavrov and its ambassador to the United States, Sergei Kislyak, were constructed privy to information so secret that the United States had not shared with its own allies, according to the news report — but Trump boasted about it to officials from a hostile government. CNN has not corroborated the Washington Post report or a New York Times report that followed it.

But if it is true, it would indicate an unspeakable lapsing in decision and could have serious ramifications for US security and diplomacy. Trump, who complains bitterly about how others treat him, has once again with his own behaviour — his own apparent inability to control himself — made yet another mess for himself and for the country.

Washington Post reporter stands by story

McMaster: Washington Post story is false