Ive read 1979 creeky .and would vote for them 🙂   here is an extract that you should follow to see where Im coming from on sticking to policies   Rhodesia The Conservative Party will aim to achieve a lasting settlement to the Rhodesia problem based on the democratic wishes of the people of that country. If the Six Principles, which all British governments have supported for the last fifteen years, are fully satisfied following the present Rhodesian Election, the next government will have the duty to return Rhodesia to a state of legality, move to lift sanctions, and do its utmost to ensure that the new independent state gains international recognition.   off to read next one and thank you for links

I'm not sure of the point you are trying to make.

As far as I am aware that committment was carried out.