US will 'defend every inch' of NATO nations but no troops to Ukraine: Biden

"As I made crystal clear, the United States will defend every inch of NATO territory with a full force of American power," Biden said in an address to the nation from the White House.

US President Joe Biden vowed Thursday to defend "every inch" of NATO territory after Russia sent forces into Ukraine -- but reaffirmed that no American troops would be deployed to Washington's ally.

U.S. President Joe Biden delivers remarks on Russia's attack on Ukraine, in the East Room of the White House in Washington, U.S., February 24, 2022. REUTERS/Leah Millis (REUTERS)

"As I made crystal clear, the United States will defend every inch of NATO territory with a full force of American power," Biden said in an address to the nation from the White House.

The president added, however: "Our forces will not be engaged in a conflict with Russia in Ukraine."