Meanwhile , Sjarifuddin began rationalising the army , cutting back on the number of troops .
This boundary was formalised by the Renville Agreement on 17 January 1948 ; among the signatories was Amir Sjarifuddin , by then also serving as prime minister .
Amir Sjarifuddin began rationalising the army , cutting back on the number of troops .
This boundary was formalised by the Renville Agreement on 17 January 1948 ; among the signatories was Amir Sjarifuddin , by then also serving as prime minister .