He was tipped to be the Iraqi Prime Minister during the 2004 discussions, a position which he refused to take it and stated "I have always concentrated on serving the people and providing them with their basic needs, rather than party politics." he was previously the deputy speaker of the
Iraqi National Assembly under the
Iraqi Transitional Government and was considered for the post of prime minister in both the
current government and the interim government. He was appointed oil minister in May 2006 after the withdrawal of the
Islamic Virtue Party Minister, which was also a Shia from the government coalition. By August, however, he was under pressure as there was a fuel crisis. In December 2012 he was named the head of the committee responsible for receiving and addressing the demands of the demonstrators. He has made some significant achievements in period of December 2012 to February 2013. From 2006 to 2010, Shahristani was Iraq's
minister of oil, and he served as acting
minister of electricity in 2010. Before his arrest and imprisonment Shahristani served as Chief Scientific Advisor to the Iraqi Atomic Energy Commission. Prior to that, he was a lecturer at Mosul University (1973), an assistant professor at Baghdad University (1974), Chief of Baghdad University's Radioisotope Production Department from 1975 to 1977, and Chief of the Nuclear Chemistry Department from 1977 to 1979. He is recognised as the architect of Iraq's oil future and during his time Iraq oil output reached a 20-Year high. He was tipped by analysts close to decision makers in Iraq as a serious contender for the PM position in 2014. On 11 July 2014 he assumed the role of acting foreign minister in addition to his deputy prime ministership, after Kurdish politicians including former Foreign Minister Hoshiyar Zebari withdrew from the government of Prime Minister
Nouri al-Maliki. ==Imprisonment==