By Over Okinawa, a radar lock by a Chinese jet on a Japanese fighter plane has signaled the new era of geopolitical instability Over Okinawa, Japan, a radar lock by a Chinese jet on a Japanese fighter plane has reminded Indo-Pacific nations that the new era of geopolitical instability is here to stay. This instability has unleashed an era of rearmament, which Singapore has entered. For the Government of the Republic, tensions in the Indo-Pacific are a fact of life that must be managed.