He said that joint work by US and Russian Federation "would continue".
Pompeo's defense came in the form of a letter to Minority Leader Chuck Schumer (D-NY), who on Tuesday questioned why USA officials met with their Russian counterparts in the U.S.
The meeting comes amid heightened concerns about Russia's aggression overseas - something about which Trump's own national security strategy warned and Pompeo himself addressed on Monday.
In his response to Schumer, Pompeo wrote that USA intelligence officials routinely meet with Russian officials to discuss topics, such as aviation security and preventing foreign fighters from returning to both nations.
In the midst of broader concerns about the Trump administration's willingness to adopt a harsh stance toward Russia and Vladimir Putin-and its decision not to enforce sanctions on key Russian officials despite an overwhelming congressional vote in favor-Schumer and other Democrats are concerned about the substance of any meetings that took place between senior US intelligence officials and their Russian counterparts.
"If this administration is ignoring sanctions, that's very serious", the New York Democrat told CNN, noting that in the letter, Pompeo didn't directly acknowledge that he had met with his Russian counterparts.
News of the meeting comes as Russia's interference in the 2016 election continues to cast a shadow over Washington. Which U.S. official did [Naryshkin] meet with?
"Given the political conditions in the United States now, it's flabbergasting to be honest".
Sergei Naryshkin — the speaker of the Russian Duma — on a visit to Finland
Naryshkin's trip to the United States raised concerns among some USA senators.
CAATSA - or the Countering America's Adversaries Through Sanctions Act - is a law signed by Trump in August that imposed sanctions on Russia, Iran, and North Korea. But Democrats criticized the list, saying it had been cobbled together from publicly available sources, including Forbes magazine's list of the wealthiest Russians.
Moscow denies the conclusions of US intelligence agencies that it led a hacking campaign of political party networks and spread disinformation to help Trump in his presidential campaign.
"The Trump administration must immediately come clean and answer questions", Senate Minority Leader Chuck Schumer told reporters on Monday.
"While we do not discuss the schedules of USA intelligence leaders, rest assured that any interaction with foreign intelligence agencies would have been conducted in accordance with USA law and in consultation with appropriate departments and agencies", a CIA spokesman said.
He was banned from entering the United States, but sanctions experts said there are processes for providing people under sanction permission to enter for official business. The publication could not establish whether Korobov took part in the meeting. The United States and Russian Federation do occasionally share information about threats to each other's countries, but it is not a robust process and doesn't compare to the close cooperation the United States has with its Western allies.
"There's just a fundamental difference piled on top of the fact that the two countries' intelligence agencies are basically at war", Weiss said.
The intelligence community has been actively trying to suppress and deter Russian Federation. "And I wanted to get back on our front foot", Pompeo said about the Central Intelligence Agency.