His remarks also came after the Russian Foreign Ministry said it received official notification that the United States intends to withdraw from the INF unless Russia remedies what Washington says is a violation of the treaty.
Pompeo, who attended the meeting, said the United States would withdrawn from the INF Treaty in 60 days unless Russian Federation complies with the agreement.
In October, U.S. President Donald Trump said Washington would pull out of the INF Treaty on account of Russia's alleged breach of the agreement, which Moscow repeatedly denied.
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Russian President Vladimir Putin said that the us plan to withdraw from a major arms-control pact is "ill-considered" and warned that Moscow will follow suit if Washington pulls out of the 1987 Intermediate-Range Nuclear Forces Treaty (INF).
Within four days, two USA officials and all 29 members of the Intermediate-Range Nuclear Forces Treaty have implored Russian Federation to stop violating the unprecedented Cold-War era nuclear pact.
"The INF is a landmark treaty but the problem is that no treaty can be effective, can work, if it's only respected by one part", Stoltenberg told reporters in Brussels, noting that the "U.S.is in full compliance".More news: Qualcomm says no plans to revisit NXP takeover
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The U.S. has shared intelligence evidence with its North Atlantic Treaty Organisation allies that it says shows that Russia's new SSC-8 ground-fired cruise missile could give Moscow the ability to launch a nuclear strike in Europe with little or no notice.
The U.S. has accused Russian Federation of other treaty violations in recent years, including deploying a cruise missile in 2017, testing a prohibited cruise missile during the Obama administration and flight-testing the SSC-8 cruise missile at unacceptable ranges since the mid-2000s.
"We strongly support the finding of the United States that Russian Federation is in material breach of its obligations under the INF Treaty", NATO foreign ministers said. "At first, the American side did announce its intent to withdraw from the INF Treaty, and then they started seeking justifications as to why they should do it".
NATO and the USA say the 9M279 - also known by the designation SSC-8 - violates the INF treaty, which banned ground-launched missiles with a range of between 500 and 5,500 kilometres. Otherwise, he said, the United States would quit the 1987 accord, considered a milestone in reducing the threat of a nuclear war in Europe.
He said work on hypersonic missiles when the U.S. withdrew from Anti-Ballistic Missile Treaty, or ABM Treaty, in June 2002.
Putin said on Wednesday that the USA decision to ditch the INF means Washington has decided the United States "has to have these weapons".
"And they still had the audacity, they have withdrawn from the treaty calmly... without referring to anything".