Headed by Prime Minister Ian Smith, the Rhodesian Front remained in government until 1 June 1979, when the country was reconstituted as Zimbabwe Rhodesia.
Smith responded by ignoring Sir Humphrey and appointing the Deputy Prime Minister Dupont, as the Officer Administrating the Government (best described as an interim Governor).
The United Nations imposed economic sanctions in 1968 after having adopted Resolution 216 condemning the declaration of independence as one "made by a racist minority.
"[3] The economic sanctions though were only partly successful; some strategic minerals, especially chromium, were exported to willing buyers in Europe and North America, which resulted in a strengthening of the economy.
In 1974, the major African nationalists groups, (ZAPU) and (ZANU), were united into the "Patriotic Front" and combined their military forces, at least nominally.
Ian Smith portrayed his government as not being racialist, and sought to postpone the question of what to do about the problems in the farming industry until after the election.
The Rhodesia general election of 30 July 1974 saw the Rhodesian Front of Ian Smith re-elected, once more winning every one of the 50 seats reserved to white voters.
77% of the white minority population voted for the Rhodesian Front, again demonstrating their continued strong opposition to black majority rule.
Rhodesia now found itself almost entirely surrounded by hostile states and even South Africa, its only real ally, was pressing for a settlement.
The new Mozambican government threw its full weight behind the ZANLA cause and Rhodesia's entire border with Mozambique became a front line across which guerrillas began to operate freely.
Rhodesia began to lose vital economic and military support from South Africa, which, while sympathetic to the white minority government, never accorded it diplomatic recognition.
In 1976 the South African and United States governments worked together to place pressure on Smith to agree to a form of majority rule.
Those forces could still launch raids on enemy bases, but Rhodesia faced diplomatic isolation, economic collapse and military defeat.
Watercourses at several sites close to the Mozambique border were deliberately contaminated with cholera and the toxin Sodium Coumadin, an anti-coagulant commonly used as the active ingredient in rat poison.
[11] The work of journalists such as Lord Richard Cecil, son of the Marquess of Salisbury, stiffened the morale of Rhodesians and their overseas supporters.
The shooting down on 3 September 1978 of the civilian Vickers Viscount airliner Hunyani, Air Rhodesia Flight RH825, in the Kariba area by ZIPRA insurgents using a surface-to-air missile, and the subsequent massacre of its survivors, is widely considered to be the event that finally destroyed the Rhodesians' will to continue the war.
Although militarily insignificant, the loss of this aircraft (and a second Viscount, the Umniati, in 1979) demonstrated the reach of insurgents extended to Rhodesian civil society.
In December 1978, a ZANLA unit penetrated the outskirts of Salisbury and fired a volley of rockets and incendiary device rounds into the main oil storage depot – the most heavily defended economic asset in the country.
[16] The Rhodesian army continued its "mobile counter-offensive" strategy of holding key positions ("vital asset ground") while carrying out raids into the no-go areas and into neighbouring countries.
For example, in April 1979 special forces carried out a raid on Joshua Nkomo's residence in Lusaka (Zambia) with the stated intention of assassinating him.
Because, what is being presented to us here is a degree of humiliation ..."[20] PK eventually retired to his country estate outside Cape Town, but there were elements in Rhodesia, mainly embittered former security force personnel, who forcibly opposed majority rule up to and well beyond independence.
Continuing talks failed to bring the two sides to an agreement, despite changes to the nationalist "line-up", now called the Patriotic Front (PF), a union of ZANU and ZAPU.
Finally in 1979 under the Lancaster House Agreement, its legal status as the British colony of Southern Rhodesia was restored, in preparation for free elections and independence as Zimbabwe.
After 1975, however, Rhodesia's economy was undermined by the cumulative effects of sanctions, declining earnings from commodity exports, worsening guerilla conflict, and increasing white emigration.
When Mozambique severed economic ties, the Ian Smith regime was forced to depend on South Africa for access to the outside world.
[citation needed] The manufacturing sector, already well-developed before the Unilateral Declaration of Independence (UDI) in 1965, was given a major stimulus by the imposition of United Nations sanctions.
The sanctions obliged Rhodesian industry to diversify and create many import-substitution undertakings to compensate for loss of traditional sources of imports.