Petrus Jozef Sietse "Piet" de Jong, born on April 3, 1915, and passing away on July 27, 2016, was an extraordinary figure in Dutch history. A disciplined naval officer and a pragmatic politician, De Jong navigated the often-tumultuous waters of 20th-century Dutch politics, ultimately serving as Prime Minister of the Netherlands from April 5, 1967, to July 6, 1971. His incredible longevity, living to 101 years, 115 days, made him the second longest-lived Prime Minister, and his premiership is consistently hailed by both scholars and the public as one of the best in Dutch history.
Early Life and a Distinguished Naval Career
Piet de Jong's journey began with a profound commitment to service. After applying to the prestigious Royal Naval College in Den Helder, he graduated as an Ensign and immediately joined the Submarine Service, a critical and demanding branch of the Royal Netherlands Navy. The true test of his character and leadership came during World War II. Serving first as First Officer and later as the Commanding Officer aboard the submarine HNLMS O 24, De Jong was thrust into the thick of global conflict. He saw intense action in both the brutal Battle of the Atlantic and the strategic Pacific War, experiences that undoubtedly honed his resolve, strategic thinking, and leadership prowess. Following the war, his naval career continued to flourish, serving as a staff officer and commanding both a frigate and a destroyer, further solidifying his reputation for competence and command.
Ascension into Politics: From Defence to Prime Minister
De Jong's transition into the political arena was a testament to his versatile skills and the recognition of his military expertise. In an unexpected turn after the 1959 general election, he was appointed State Secretary for Defence, specifically tasked with Naval Affairs, taking office on June 25. His deep understanding of defense matters quickly made him an indispensable asset within the government. By July 24, 1963, following the 1963 election, De Jong was elevated to Minister of Defence in the Cabinet Marijnen. He proved to be a remarkably stable and consistent presence in the often-turbulent world of Dutch coalition politics, retaining his ministerial post through the subsequent Cabinet Cals and the caretaker Cabinet Zijlstra. This period allowed him to gain invaluable experience in high-level governance and policy-making.
The De Jong Premiership (1967-1971): A Pivotal Era
The pinnacle of Piet de Jong's political career arrived after the 1967 election. Following several failed attempts by other political figures to form a new government, De Jong, a prominent member of the Catholic People's Party (KVP) – a significant precursor to today's Christian Democratic Appeal (CDA) – was called upon to lead. Successfully forming the Cabinet De Jong, he officially became Prime Minister of the Netherlands on April 5, 1967, and held the office until July 6, 1971.
His premiership is widely celebrated as one of the most effective and stable periods in Dutch history. The Cabinet De Jong embarked on a comprehensive program of reform, implementing significant changes across various crucial sectors. Education underwent substantial modernization, social security provisions were notably strengthened, and the tax system saw important adjustments aimed at fostering economic stability and social equity. On the international stage, De Jong's government skillfully managed to improve relations with the former Dutch East Indies, a delicate and historically charged issue that required immense diplomatic tact. Domestically, he adeptly navigated the challenging landscape of the 1960s, a decade marked by the rise of counterculture movements, the societal fallout from the Vietnam War, and internal crises such as the sensitive Moluccans incidents, which demanded careful and firm handling from the government. A remarkable testament to his leadership and ability to foster consensus, Piet de Jong holds the distinction as the first Prime Minister after World War II to complete a full four-year term without experiencing any internal cabinet conflicts – a truly exceptional feat in coalition governance.
Life After the Premiership and Enduring Legacy
Despite the widespread success and stability of his government, the Catholic People's Party chose not to nominate Piet de Jong as their *Lijsttrekker* (top candidate) for the 1971 election. De Jong, ever the statesman, gracefully accepted this decision, announcing he would not seek re-election. He left office with the installation of the Cabinet Biesheuvel I on July 6, 1971. However, his commitment to public service was far from over. He remained active in Dutch politics, successfully securing a seat as a Member of the Senate after the 1971 Senate election and subsequently serving as its influential Parliamentary leader from May 11, 1971, until September 17, 1974.
Upon retiring from active parliamentary politics at the age of 59, De Jong transitioned seamlessly into influential roles across both the private and public sectors. He lent his expertise as a corporate and non-profit director, contributed significantly to several state commissions and councils, and even served as a diplomat and lobbyist for various economic delegations on behalf of the Dutch government. Piet de Jong was consistently lauded for his exceptional abilities as an effective team leader and a masterful negotiator – qualities that were undoubtedly honed during his distinguished naval career and refined in the demanding political arena. He remained a respected statesman, offering insightful commentary on political affairs and national issues well into his later years. When he passed away in July 2016 at the incredible age of 101 years and 115 days, the Netherlands mourned the loss of a truly impactful leader whose life exemplified steadfast service, pragmatic leadership, and an unwavering commitment to the welfare of his nation.
Frequently Asked Questions (FAQs)
- Who was Piet de Jong?
- Petrus Jozef Sietse "Piet" de Jong was a highly influential Dutch politician and naval officer who served as the Prime Minister of the Netherlands from 1967 to 1971. He was a prominent member of the Catholic People's Party (KVP), which later merged into the Christian Democratic Appeal (CDA).
- What was Piet de Jong's role in World War II?
- De Jong had a distinguished naval career during WWII. He served as First Officer and later as Commanding Officer on the submarine HNLMS O 24, seeing active combat in both the Battle of the Atlantic and the Pacific War. His service demonstrated remarkable bravery and leadership during a critical period.
- When was Piet de Jong Prime Minister of the Netherlands?
- Piet de Jong served as Prime Minister of the Netherlands from April 5, 1967, to July 6, 1971, leading the Cabinet De Jong.
- What were some key achievements of the De Jong premiership?
- His government implemented significant reforms in education, social security, and taxation. He also improved relations with the former Dutch East Indies and skillfully navigated major domestic and international challenges of the 1960s, including the counterculture movement and the Moluccans incidents. Notably, he was the first post-WWII PM to complete a full term without internal cabinet conflicts.
- How old was Piet de Jong when he died?
- Piet de Jong lived to be 101 years and 115 days old, passing away in July 2016. He holds the record as the second longest-lived Prime Minister of the Netherlands.

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