Russian fighter jet flies dangerously close to US warplane over Syria

A Russian fighter jet flew very close to a U.S. surveillance aircraft over Syria, forcing it to go through the turbulent wake and putting the lives of the four American crew members in danger, U.S. officials said.

The officials said the incident, which happened just before noon EDT on Sunday, was a significant escalation in what has been a string of encounters between U.S. and Russian aircraft in Syria in recent weeks. The intercept by the Russian Su-35 impeded the U.S. crew's ability to safely operate their MC-12 aircraft, the officials said, calling it a new level of unsafe behavior that could result in an accident or loss of life.

In recent weeks, Russian fighter jets have repeatedly harassed U.S. unmanned MQ-9 drones, but the latest incident raised alarms because it endangered American lives.

The officials, who spoke on condition of anonymity to discuss details of a military operation, would not say how close the Russian jet got to the U.S. warplane. The MC-12, which is a twin-engine turboprop aircraft routinely used by special operations forces, was doing surveillance in support of operations against the Islamic State groups in Syria, the officials said.

On multiple occasions in the past two weeks, Russian fighter jets flew dangerously close to MQ-9 Reapers, setting off flares and forcing the drones to take evasive maneuvers. U.S. and Russian military officers communicate frequently over a deconfliction phone line during the encounters, protesting the other side's actions.

The U.S. is considering a number of military options to address the increasing Russian aggression in the skies over Syria, which complicated efforts to strike an Islamic State group leader earlier this month, according to a senior defense official. The U.S. was eventually able to launch a strike and kill the militant.

The official, who also spoke on condition of anonymity to discuss military operations, declined to detail the options under consideration, but said the U.S. will not cede any territory and will continue to fly in the western part of the country on anti-Islamic State missions.

The Russian military activity, which has increased in frequency and aggression since March, stems from growing cooperation and coordination between Moscow, Tehran and the Syrian government to try to pressure the U.S. to leave Syria.

There are about 900 U.S. forces in the country, and others move in and out to conduct missions targeting Islamic State group militants.