美国指责俄罗斯黑海上空危险拦截

The United States accused Russia of sending one of its fighter jets dangerously close to an American spy plane over the Black Sea on Wednesday, an intercept American military officials said was "unsafe and uNPRofessional," even as Moscow said it acted in accordance with international flight rules.

The U.S. said its Navy P-8A Poseidon aircraft was on "routine operations" in international airspace when a Russian SU-27 Flanker jet flew within three meters of it in an intercept that lasted 19 minutes.

"U.S. Navy aircraft and ships routinely interact with Russian units in the area and most interactions are safe and professional," the U.S. Defense Department said. "However, we have concerns when there is an unsafe maneuver like this. These actions have the potential to unnecessarily escalate tensions, and could result in a miscalculation or accident."

The Russian defense ministry said it dispatched its fighter jet after the U.S. aircraft approached the Russian border and turned off its transponders, which are used for identification.