October 1974 and plead for a larger offensive the next dry season. This time, Trà could travel on a drivable highway with regular fueling stops, a vast change from the days when the Ho Chi Minh trail was a dangerous mountain trek. Giáp, the North Vietnamese defence minister, was reluctant to approve of Trà's plan since a larger offensive might provoke U.S. reaction and interfere with the big push planned for 1976. Trà appealed to Giáp's superior, first secretary Lê Duẩn, who approved the operation. Trà's plan called for a limited offensive from Cambodia into Phước Long Province. The strike was designed to solve local logistical problems, gauge the reaction of South Vietnamese forces, and determine whether the U.S. would return. On 13 December 1974, North Vietnamese forces attacked Phước Long. Phuoc Binh, the provincial capital, fell on 6 January 1975. Ford desperately asked Congress for funds to assist and re-supply the South before it was overrun. Congress refused. The fall of Phuoc Binh and the lack of an American response left the South Vietnamese elite demoralized. The speed of this success led the Politburo to reassess its strategy. It decided that operations in the Central Highlands would be turned over to General Văn Tiến Dũng and that Pleiku should be seized, if possible. Before he left for the South, Dũng was addressed by Lê Duẩn: "Never have we had military and political conditions so perfect or a strategic advantage as great as we have now." At the start of 1975, the South Vietnamese had three times as much artillery and twice the number of tanks and armoured cars as the PAVN. They also had 1,400 aircraft and a two-to-one numerical superiority in combat troops over the PAVN/VC. However, heightened oil prices meant that many of these assets could not be adequately leveraged. Moreover, the rushed nature of Vietnamization, intended to cover the US retreat, resulted in a lack of spare parts, ground-crew, and maintenance personnel, which rendered most of the equipment inoperable. Campaign 275 On 10 March 1975, General Dung launched Campaign 275, a limited offensive into the Central Highlands, supported by tanks and heavy artillery. The target was Buôn Ma Thuột, in Đắk Lắk Province. If the town could be taken, the provincial capital of Pleiku and the road to the coast would be exposed for a planned campaign in 1976. The ARVN proved incapable of resisting the