WASHINGTON — President Trump lashed out at the nation’s intelligence agencies again Wednesday, saying that his former national security adviser, Michael T. Flynn, was brought down by illegal leaks to the news media, on a day of new disclosures about the Trump camp’s dealings with Russia during and after the presidential campaign.

“From intelligence, papers are being leaked, things are being leaked,’’ Trump said at a White House news conference with Benjamin Netanyahu, the prime minister of Israel. “It’s a criminal action, criminal act, and it’s been going on for a long time before me, but now it’s really going on. And people are trying to cover up for a terrible loss that the Democrats had under Hillary Clinton.’’

With his statement and a burst of early-morning posts he made on Twitter, Trump tried to shift attention from damaging questions about contacts with Russia by Flynn and others close to the president, arguing that the outrage is not those contacts, but the leaks about them. He revived his charge that the allegations of a “Russian connection’’ were nothing more than a Democratic conspiracy, fed to a receptive news media to distract from the mistakes made by Clinton during the campaign.

Earlier, he had posted on Twitter, “Information is being illegally given to the failing @nytimes& @washingtonpost by the intelligence community (NSA and FBI?). Just like Russia’’

So far, the White House has had little success in trying to shift the narrative from the Russian contacts to accusations about the leaking of sensitive information by the intelligence agencies, as well as by the FBI.

Trump used a similar strategy during the transition.