Mike Pompeo at the US Senate Foreign Relations Committee hearing on Capitol Hill, Washington, DC, on July 25, 2018. (Photo: Reuters)

US Secretary of State Mike Pompeo on Wednesday vigorously defended President Donald Trump's foreign policy actions as senators from both parties denounced Trump's behavior, particularly at his recent summit with Russia's Vladimir Putin.

Pompeo faced tough questioning from Democrats and Republicans during testimony before the Senate Foreign Relations Committee about Trump's failure to hold the Russian president accountable for Moscow's meddling in the 2016 US election at their meeting in Helsinki last week.

"I have tremendous faith in you, I think you're a patriot ... but it's the president's actions that create tremendous distrust in our nation," the committee's Republican chairman, Bob Corker, told Pompeo, reported by Reuters on Thursday.

"Is there some strategy behind creating doubt in US senators' minds, on both sides of the aisle, doubt in the American people as to what his motivations are?" added Corker, who often criticizes President Trump.

Corker also criticized comments by Trump that Democratic People's Republic of Korea (DPRK) leader Kim Jong Un was "very talented" and that "he loves his people."

Pompeo said he had been comprehensively briefed on Trump's one-on-one meeting with Putin, who US intelligence agencies said knew about Russia's meddling in the election.

Putin has said no such interference occurred and Trump has denied there was any collusion between his campaign and Moscow. The matter is under investigation by US Special Counsel Robert Mueller.

In often testy exchanges with senators, Pompeo listed actions by the Trump administration against Russia, including what he said were over 200 sanctions against Moscow.

Just before his testimony, Pompeo issued a statement restating US policy rejecting Russia's invasion of Crimea.

The "Crimea Declaration" appeared to try to quell suggestions that Washington could accept Moscow's 2014 occupation of the Ukrainian peninsula following the Trump-Putin meeting and questions about what Trump agreed to in the one-on-one talks.

Trump has repeatedly declined to hold Putin accountable for annexing Crimea, pointing to former President Barack Obama instead for allowing it to happen under his watch.

"The United States rejects Russia's attempted annexation of Crimea and pledges to maintain this policy until Ukraine’s territorial integrity is restored," Pompeo said in the statement.

Pompeo said during the testimony that the US would not recognize Russia's actions in Crimea and would not support formalization of the Crimea case. Pompeo claimed Trump's Putin summit was a step forward for the US toward better diplomatic relations with world leaders, and it was not improper for presidents to meet world leaders one-on-one, National Public Radio reported on Wednesday

On Russia's interference in the US presidential election in 2016, Pompeo said during the testimony, "President Trump has stated that he accepts our intelligence community's conclusion that Russia meddled in the 2016 election," CNN reported on Wednesday.

Pompeo later reassured senators that the United States would not lift sanctions against Russia until Moscow returned control of Crimea to Ukraine.

Russia's Foreign Ministry quickly dismissed Pompeo's comments. "We know the worth of such momentous declarations," ministry spokeswoman Maria Zakharova said on her Facebook account.

Speaking after the summit, Putin said Trump believed that Russia's invasion of Crimea was legal based on a referendum.

The White House National Security Adviser John Bolton said on Wednesday that Trump would postpone a second meeting with Putin until next year after the federal probe into the alleged meddling is over.

Trump said last week he would invite Putin to Washington for an autumn meeting, a move that sparked a new outcry, including from lawmakers in Trump's Republican Party, who argued that Putin was an adversary not worthy of a White House visit.

Pompeo declined to offer details of what he knew about the Helsinki meeting. He said conversations between the president and his Cabinet should remain private.