The heated diplomatic interchanges between Kobayashi and van Mook (H.J. van Mook, Dutch minister) were in sharp contrast to the peaceful surroundings. Japan's diplomats angrily contended that the Netherlands delegates were mere puppets of Washington. On the table were proposals involving Japanese rights to obtain oil and petroleum products from the Netherlands' enormous reserves in the Dutch East Indies. Japan called for the Dutch to provide a minimum of 3,150,000 metric tons of petroleum annually. One of the delegates, Japanese minister of commerce Ichizō Kobayashi, demanded that the Dutch guarantee a delivery schedule covering a five-year period. Kobayashi expressed the attitude of his government: "The Netherlands has been closely co-operating with United Kingdom and the United States. Now is the time to shake hands with Japan."