Temesgen Haile grew up in Ethiopia and was an avowed Marxist-Leninist. While he supported Eritrea's struggle along with Mesfin Araya, both of them viewed it as petty nationalism. They believed the Eritrean question should be resolved as part of an Ethiopian democratic struggle

Temesgen was a powerful writer and orator, involved in student movements at Addis Ababa University and elected to lead one of their organizations. He started and edited the journal Qalsi which stirred opinion both in and outside the university

After reading Nihnan Elamanan, Temesgen and Mesfin Araya began to participate in the Eritrean struggle. Temesgen co-founded the paper Tihisha and served as its principal writer. Tekie Beyene said he never met someone with such a sharp and analytical mind as Temesgen

Together with Amanuel Yohannes and Mesfin Araya, Temesgen would organize underground cells, recruit members and stage airplane hijackings. Temesgen recognized the need for Eritreans to work together with Ethiopians who were struggling against Haile Selassie's rule

After a hijacking in late 1972 culminated in a shootout, killing all but one of its participants, Ethiopia's security forces would move against underground militant cells. Temesgen used his work as a geologist at the Ministry of Mines to travel across Ethiopia and Eritrea

While staying in Asmara in 1973 and knowing he was wanted, Temesgen decided to return to Addis Ababa, probably to remove any sensitive papers he'd stashed away. The security forces would catch him along with @AmbassadorEstif but he wouldn't surrender information

Temesgen tricked them: he led them into a building saying he'd hand over secret papers, briefly escaped their attention and leaped to his death. His widow went to meda with their son Cabral who died after a sudden illness in the '80s

Alemseged Tesfai echoes Tekie Beyene's description of Temesgen in this interview. He says his influence and death drove him to become political and join the struggle. Alemseged named his late son after him
http://www.ecss-online.com/2013/wp-content/uploads/2020/03/Alem-Seged.pdf

After Temesgen died, Tihisha's first issue was reproduced in the EFLNA's publication Harnet. Here's its founding editorial and an interview On Women and Revolution with Martha Mebrahtu who died during the failed 1972 hijacking. The rest can be found here https://www.marxists.org/history/erol/eritrea/liberation-2-5.pdf