Furious US Navy chiefs have condemned the 'unsafe' interception of one of its reconnaissance planes by a Russian fighter jet over the Black Sea.
The American EP-3 aircraft was flying in international airspace on Monday when the Russian SU-27 cut directly across its path at high speed, reports CNN.
Footage taken aboard the American propeller-driven plane captured the 25-minute encounter.
The US Navy pilots and crew reported turbulence aboard their aircraft shortly after the pass.
The Russian pilot then cut across the EP-3 again, and this time ignited the SU-27's afterburners during a banking manoeuvre.
This is believed to have caused a vibration in the US aircraft.
'This interaction was determined to be unsafe due to the SU-27 conducting a high speed pass directly in front of the mission aircraft, which put our pilots and crew at risk.' the US. 6th Fleet wrote in a statement.
'Unsafe actions increase the risk of miscalculation and potential for midair collisions.'
The US Navy statement added that 'while the Russian military is within its right to exercise within international airspace, this interaction was irresponsible.'
A Twitter account for the Russian embassy in the US posted a brief statement about the encounter on Monday saying the fighter jet 'followed all necessary safety procedures.'
The incident was not the first controversial encounter between US and Russian aircraft over the Black Sea.
In January, an SU-27 jet came within 1.5 metres of a US Navy EP-3 plane, forcing the American plane to fly through its jet wash.
The US military criticised the interception as unsafe and unprofessional.
Meanwhile, details have emerged of the exchange between commanders of a US Navy destroyer and Chinese warship that came within 40 metres of each other in the South China Sea in September.
'You are on dangerous course,' the Chinese vessel warned over the radio, according to a transcript of the exchange obtained by the South China Morning Post.
It told also warned the US ship that it would 'suffer consequences' if it did not alter course.