South Korea and Japan separately scrambled fighter jets after Russian and Chinese military aircraft conducted a joint air patrol near both countries.

Seven Russian and two Chinese aircraft entered South Korea’s Air Defence Identification Zone (KADIZ) at approximately 10am local time (01:00 GMT) on Tuesday, according to the office of the Joint Chiefs of Staff in Seoul.

The planes, which included fighter jets and bombers, were spotted before they entered the KADIZ – which is not territorial airspace but where planes are expected to identify themselves – and South Korea deployed “fighter jets to take tactical measures in preparation for any contingencies”, according to reports.

The Russian and Chinese planes flew in and out of the South Korean air defence zone for an hour before leaving,

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