Lee Kuan Yew did not threaten to go to war if we did not supply water and I don't know about the sale of land to Singapore
Dr. Mahathir Mohamad
2. We were at that time trying to be friendly with Singapore in order to solve several problems. Although raw water would be supplied at 3 cent per 1000 gallons, the understanding was that in future only treated water would be supplied when our treatment plants would be ready. We would also not buy any more treated water from Singapore at 50 cent per thousand gallons when our new treatment plant in Johore is ready.
4. However when we concluded the water supply agreement Singapore raised a lot of issues regarding our railway land, the CIQ (Customs, Immigration and Quarantine) at Tanjong Pagar, training flights by Singapore warplanes over Malaysia and the Central Provident Funds.
5. At that stage I realised that being friendly with Singapore did not pay.
6. I don't know about the sale of land to Singapore but as it was agreed that a treatment plant be built by Singapore in Johore, land would have to be made available.