Combined Turkish forces are escorting Russian ships through the Bosphorus Strait as a result of an intelligence tip that Islamic State (IS) was planning an attack using missiles and long-barrel weapons, according to a Xinhua news agency report.
Istanbul police and the coast guard were said to have issued a highest-level alarm. As a result Russian ships passing through the Bosphorus were being accompanied by two Turkish attack boats and a police helicopter. Istanbul police have also established nearly 150 security checkpoints in along the strait. Soldiers were seen last week standing guard on a Russian warship.