
Coup leader Gen (Ret) Prayut Chan-o-cha first mentioned his programme concerning corruption in late May, 2014, not long after seizing power. It was so long ago that there wasn't even a National Council for Peace and Order (NCPO). It was still called the National Peace and Order Maintaining Council (NPOMC).
He talked about fighting graft in arguably the most determined, convincing and morale-boosting way of any recent head of government, elected or otherwise.
A Bangkok Post columnist chary about the military coup wrote that the junta leader was "obviously serious about the matter" of graft.