The incident in the Baltic Sea involving a Sukhoi SU-24 bomber flying dangerously close to the USS Donald Cook was a reckless step that might have resulted in the Russian aircraft being fired on, said U.S. Secretary of State John Kerry in an interview with CNN Espanol and The Miami Herald.

"We condemn this kind of behavior. It is reckless. It is provocative. It is dangerous. And under the rules of engagement that could have been a shoot-down," Reuters cites Kerry as saying.

After watching video footage of the flyby, Kerry referred to the Russian jet’s maneuvering as ‘really dangerous’.

"People need to understand that this is serious business and the United States is not going to be intimidated on the high seas. ... We are communicating to the Russians how dangerous this is and our hope is that this will never be repeated,” Kerry said.

It was reported earlier that two Russian fighter jets made several passes around the USS Donald Cook in the Baltic Sea on April 13. Commenting on the incident, Russian Defense Ministry spokesman Igor Konashenkov said that the Russian Defense Ministry could not understand why the American side reacted so painfully.