Answer
Nasution assisted Soeharto in his rise to power following the political turmoil in Indonesia. Nasution had been a close ally of Sukarno, but he became disillusioned with Sukarno's leadership and believed that he was not doing enough to address the country's problems. Nasution supported Soeharto's coup d'état against Sukarno and helped to install him as president. Nasution and Soeharto worked together to stabilize the country and to rebuild the economy.