SECRET warfare on the present scale or significantly weaken the Central People's Government's present hold on the country. Furthermore, even the imposition of a total sea blockade, including the interception of shipping bound for Dairen and Port Arthur, and shipping between Soviet Far Eastern and Chinese ports, would be indecisive unless accompanied by the continuous severance of Sino/ Soviet rail connexions. China is only just self-sufficient in foodstuffs, only 5 per cent is distributed by road and rail, and a heavy.