Russia's Defence Ministry said on Monday it would view any flying objects over Syria as "targets" in the areas of the country where its air forces operate, and warned it will retaliate if America continues to shoot down Syrian jets above the war-torn country.

Moscow says the downing of a Syrian warplane by the US is a step toward a "dangerous escalation" and is warning Washington not to use force against President Assad's troops.

There has been no reaction from the White House.

This was reported by BBC and other U.K. Sources.

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June 19, 201