TOKYO, Japan (AFP) — Tokyo lodged a diplomatic protest with Moscow after scrambling fighter jets on Wednesday as a suspected Russian helicopter entered Japan’s northern airspace at a time of heightened tensions over Ukraine. Japan, which has volatile ties and border disputes with key neighbours China, Russia and South Korea, routinely sends jets to defend its territorial airspace. The country scrambled military jets 49 times in January, 142 times in December and 127 times in […]