Main Page | See live article | Alphabetical index Petrus Jozef Sietze "Piet" de Jong (born April 3, 1915) is a Dutch politician, prime minister of the Netherlands from 1967 until 1971, as a member of the catholic KVP party. Born in Apeldoorn, De Jong was a naval officer before becoming involved in politics in 1963. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.