His father was Mirza Mahmoud Shirazi, a merchant, who died when Abolqasem was an infant. His mother was the daughter of Iran's first modern physicist and astronomer, Mirza Abdulqaffar Nadjm ol-Molk. Abdulqaffar, who taught mathematics and physics at Dar ul-Funun, took Abolqasem under his custody after Abolqasem was orphaned. Abolqasem received his basic education from his grandfather and later inherited his grandfather's title of 'Nadjm ol-Molk' after Mirza Abdulqaffar's retirement. He studied at the Tehran School of Political Sciences.
Diplomatic career
After graduation he entered the service of the ministry of foreign affairs in 1912 as an attaché. He was Iran's ambassador to the Third Reich, but was appointed to France upon his own request just prior to the outbreak of the second world war. In 1937, when Nadjm was Iran's ambassador to France, the French journal L'Europe Nouvelle criticized the economic condition of Iran. Reza Shah Pahlavi demanded an apology and received one. A French columnist reopened the wound one month later by rehearsing the incident under the punning headline // n'y avait pas la de quoi fouetter un Shah. This was a parody of the French phrase "There was nothing there with which to beat a cat", suggesting that the King of Kings had made a fuss about nothing. The poor pun was enough to make Reza ShahPahlavi immediately recall Nadjm to Tehran "for an explanation", and withdraw his promise to lend Iranian art objects to the coming Paris International Exhibition which was planned for May 1937. Nadjm later served as Iran's ambassador to Japan, until the relations between the two countries were severed due to Iran's declaration of war to the Axis in April 1943. Nadjm was summoned to Tehran and the Japanese delegation were ordered to leave Tehran at the same time''. He was then appointed as the ambassador to Afghanistan. As a neighboring country and a Persian-speaking monarchy, Afghanistan was considered very important and the post of ambassador in Kabul had more significance attached to it than it has had in more modern times.
Political career
He was the minister of finance in Ebrahim Hakimi's cabinet and tried to fight corruption, but was held back by interference from the royal family. This resulted in his resignation and the downfall of the cabinet. These events are described by Mehdiqoli Hedayat in his memoirs: His last government job was as the governor of the oil-rich Khuzestan province. He resigned from this post, citing interference from the royal family in his day-to-day governance of the province. He was elected as a senator in the first Senate and served only one term. During this time, he was a member of the Oil Commission, a group of politicians whose work eventually resulted in the nationalization of the Iranian oil industry ''.
Later years
Nadjm spent the last 30 years of his life in retirement. Long after retirement from politics, Nadjm retained his good name as one of the few Pahlavi era politicians who were clean of financial and ethical corruption. Near the end of his life, the Shah, embattled by the Iranian revolution, called on him to return to the government as a part of the reforms intended to quell the revolutionary fervor. The ailing Nadjm could not comply. Abolghassem Nadjm died in Tehran at the age of 89, shortly after the Iranian Revolution. His brother Mohammad Hossein Nadjm was also an Iranian diplomat, who served as Iranian ambassador to Lebanon and chargé d'affaires in Paris.
