In 1991, as he commanded the EPLF army that besieged Asmara, taking charge of the city when it fell to his forces. In its June 16, 1991 publication, "The New York Times" stated that after the fall of Asmara, "Petros Solomon, was running the city until the arrival of Isaias Afewerki". Following independence, Petros Solomon served in various cabinet positions. He served as the first Minister of Defense of Eritrea. In mid-February 1997, he was moved from the post of Minister of Foreign Affairs to that of Minister of Marine Resources.