Editor's note: This story has been updated throughout.

U.S. Sen. Ted Cruz, R-Texas, dismissed concerns Thursday about Russian interference in the 2016 presidential election, calling them an effort to undermine Donald Trump's victory. 

“The media want to do what they can to try to delegitimize the election," Cruz said in a radio interview Thursday morning, later saying he thinks there is "no evidence whatsoever that Russia's efforts against us, which have been longstanding, did anything to affect the campaign." 

Cruz went on to argue that Trump's Democratic rival, Hillary Clinton, did not lose due to Russian hacking but because she was a poor candidate "who embraced an agenda that has failed and the American people disagree with."

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"News media doesn’t want to acknowledge any of that so they say, 'Gosh, it must be the Russians,'" Cruz said in the interview, which was done with conservative host Mike Gallagher. "It’s frankly, patently absurd."

Until Thursday, Cruz, Trump's former Republican primary rival, had been relatively quiet on the issue, the biggest foreign policy debate since the Nov. 8 election in which Trump upset Clinton. After Trump's win, reports surfaced that Russia meddled in the race to boost the Republican nominee, leading President Barack Obama to announce new sanctions against the country last month.

In a round of media appearances Thursday morning, Cruz largely sided with Trump — and against some Republican colleagues in the Senate — in downplaying the impact of the interference. Cruz kept the focus on the current administration, saying it is not surprising countries like Russia are engaging in cyber-warfare against the United States because the Obama has not responded forcefully enough to previous attacks. 

"Every act of cyber-warfare gets treated with effectively a yawn and no meaningful reactions," Cruz told conservative radio host Hugh Hewitt.

Cruz stopped short of aligning himself with Trump on Julian Assange, the WikiLeaks founder whom Trump has favorably quoted. After saying he does not intend to "come after everything the president-elect does," Cruz made clear he does not view Assange as a figure worthy of praise. 

"I think Assange has done enormous damage to our national security," Cruz told Hewitt. "I would not be praising him under any circumstances." 

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Read more:

  • Cruz endorsed Trump in September after a months-long holdout, including a speech at the Republican National Convention in which he pointedly declined to offer his support.
  • Last month, Trump passed over U.S. Rep. Michael McCaul, R-Austin, for a job in Trump's administration.

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