[4] Tettegah's appointment was considered to be the final consolidation of power by the CPP's left-wing faction, as Ghana's foreign policy became more geared towards closer relations with the Soviet Union, China, and Eastern Europe.
[7] Nkrumah apparently relied on this faction of the CPP to mount a “full scale intellectual, educational and organisational attack on all aspects of colonialism, neo-colonialism and imperialism.” [7] Tettegah also played a role in the souring of relations between Ghana and Israel, as left-wing associates of Tettegah like Tawia Adamafio replaced more moderate members of Nkruma's administration, and relations with the communist world became closer.
[7] Tettegah's left-wing influence continued to drive the direction of Ghanaian foreign policy until the fall of Kwame Nkrumah's government in 1966.
[8] Tettegah's work in the TUC was hugely influential in implementing Nkrumah's nationalist project of creating ideological cohesion in Ghana and transforming the Ghanaian mass into a disciplined, modern workforce.
[5] When Kwame Nkrumah's government was overthrown in a violent coup d'état led by military and police forces who established the National Redemption Council in 1966, Tettegah went into voluntary exile, living in Tanzania, Egypt and Guinea.
[3] Shortly after his return to Ghana, Tettegah was arrested with his fellow diplomat Kojo Botsio, and both were charged with plotting to overthrow the government.
[3] In 1983, the Provisional National Defense Council (PNDC) government appointed Tettegah ambassador to the Soviet Union and later represented Ghana in East Africa.