Secretary of State Mike Pompeo Michael (Mike) Richard PompeoOvernight Defense: Pentagon redirects pandemic funding to defense contractors | US planning for full Afghanistan withdrawal by May | Anti-Trump GOP group puts ads in military papers Overnight Defense: House Democrats unveil stopgap spending measure to GOP opposition | Bill includes .6B for new subs | Trump issues Iran sanctions after world shrugs at US action at UN Navalny calls on Russia to return clothes he was wearing when he fell ill MORE said Friday that the NATO alliance is "more indispensable than ever" after recent actions from Russia, including an assassination attempt on British soil.

In his first public remarks after being confirmed as President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's new secretary of State, Pompeo urged the alliance not to return to "business as usual."

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"In light of Russia's unacceptable actions, NATO is more indispensable than ever," Pompeo said. "As our allies agree, the use of military-grade nerve agent developed by Russia on U.K. territory was a reckless action that put the lives of innocent civilians at risk."

"NATO should not return to business as usual with Russia until Moscow shows a clear change in its actions," he added.

Russia has denied responsibility for the March poisoning of former double agent Sergei Skripal and his daughter, who were found unconscious on a park bench suffering from what the United Kingdom said were the symptoms of a Soviet-developed nerve agent.

The British government, along with the Trump administration, condemned the actions as a Russian operation and refused to accept the denials of the Russian government.

Pompeo's predecessor, Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE, laid blame for the attack at Russia's feet before his firing by Trump last month.

“From Ukraine to Syria — and now the [United Kingdom] — Russia continues to be an irresponsible force of instability in the world, acting with open disregard for the sovereignty of other states and the life of their citizens,” Tillerson said in early March.

Russia has issued a number of statements accusing the U.K. and U.S. of deliberately inflaming tensions over the matter, while ignoring Russia's explanations.

Trump famously called the NATO alliance "obsolete" during his campaign for president, a statement he walked back last year.