An important step taken by Boertien was to bring the co-financing program entirely within the government sphere and to tighten the criteria. After a meeting in 1972, private organizations proposed refinements to the existing agreements, which Boertien accepted. However, approval of co-financing projects by the Ministry of Foreign Affairs was made dependent on an agreement by the government of the recipient country.
The biggest challenge during his tenure was the erosion of his budget due to high inflation. In July 1972, Boertien fought against an attempt to cut the budget. He believed that a budget problem should not be an obstacle to aid, and furthermore, the ministry had calculated that half of the funds flowed back to the Netherlands through orders for Dutch businesses. However, he did advocate for a decrease in funding for Suriname and the Dutch Antilles, inspired by the view of the Kingdom Commission (Koninkrijkscommissie) (1972) that ties with the West should be loosened.
Udink had previously established the NCO. However, tensions around the NCO escalated to the point where Boertien announced that the mandate of this commission would be terminated by the end of 1973. However, this was corrected by the new Den Uyl cabinet.
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