Sen. Bernie Sanders on Sunday blasted President Trump for not marshaling the forces to protect the United States from Russia disrupting future elections, calling the lack of action a “horror show.”

“How do we have the president of the United States not saying what everybody knows to be true?” the Vermont independent said on NBC’s “Meet the Press.” “Russia interfered in ‘16 and they’re going to interfere in 2018. … This is a huge deal and that we don’t have a president speaking out on this issue is a horror show.”

The Department of Justice as part of special counsel Robert Mueller’s investigation announced the indictment of 13 Russians and three Russian organizations for carrying out a deliberate plot to sabotage the 2016 presidential election and to create discord in American society.

“And I think one of the weirdest things in modern American history is you have every intelligence agency, you have the Mueller report, you have Trump’s own administration saying [Russians] want to sabotage the 2018 campaign. Everybody knows this, except the president of the United States,” the former Democratic presidential candidate said.

Sanders faulted Barack Obama for not calling out Russian meddling sooner, but acknowledged the former president was in a tough position.

“Obama was in a very difficult position and didn’t want to make it appear he was favoring Hillary Clinton,”​ Sanders​ said. “Maybe he should have done more.”

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But he said that was then and this is now and the Russians will do it again.

“We have got to bring Democrats and Republicans together despite the president to go forward to protect the integrity of American democracy,” he said.

Trump​ has spent the weekend railing about the Russian indictment – saying it clears his administration from claims of collusion, blaming Obama for not doing more to prevent the meddling, defending his description of Russian interference as a “hoax” and saying “they are laughing their asses off in Moscow” – but not once calling for any action to punish Russia or prevent further interference in this year’s elections.