Greece's former prime minister Alexis Tsipras Monday released a long-awaited memoir, 10 years after the trauma of the country's debt crisis, as he reportedly mulls a political comeback.The ex-Communist youth leader, who came to power in 2015 as an anti-austerity firebrand at the head of the left-wing Syriza alliance, was forced to negotiate a multi-billion-dollar rescue with Greece's EU-IMF creditors.Now 51, he has said he felt an "obligation" to "recount the events as I experienced them, to capture the conditions, the conflicts, the dilemmas, and the cost"."It is time for my voice to be heard," he said in a statement this month.The memoir — an epic 730 pages — is titled *Ithaki, the Ionian island also known as Ithaca, where Tsipras in 2018 emphatically declared Greece's exit from its decade-long economic crisis.Much of his ire over Greece's troubled financial odyssey is directed at former comrades, including finance minister of the time Yanis Varoufakis.Tsipras said he picked the maverick economist to show "aggressive determination" but that ultimately he was a "celebrity" who became intolerable even to his own colleagues.There are also details about Tsipras' tightrope negotiations with world leaders, including former US president Barack Obama, Germany's Angela Merkel and Russia's Vladimir Putin.He recalled Merkel being left "speechless" by his decision to hold a referendum on the EU-IMF rescue deal.While Obama offered behind-the-scenes guidance, Putin bluntly turned down an offer to buy Greek government bonds, saying he would rather give the money to an orphanage.Tsipras insists the referendum, in which Greeks overwhelmingly voted to reject further cuts, was a "weapon" to stave off national "humiliation".But he also admitted that some members of his party had a tenuous grip on reality when it came to the issues at stake.Zoe Konstantopoulou, who was picked by Tsipras to be head of parliament but later fell out with him over the rescue deal he approved, Monday called him a "traitor".And some of Tsipras' attributions to the former leader of the socialist Pasok party Fofi Gennimata, who died in 2021, were untrue, one of her close aides said Monday.The book "puts words into the mouth of a person who can no longer respond and defend the truth", said former Pasok MP Manolis Othonas.Tsipras stood down as prime minister after losing a 2019 national election to the conservative New Democracy party of Kyriakos Mitsotakis, the current prime minister.He quit as party leader in 2023 after Mitsotakis inflicted an even broader election defeat in back-to-back polls. In October he also stepped down as MP.Syriza repeatedly fractured after Tsipras' departure, and currently polls in sixth place at around 5.0%.Tsipras last year formed a political institute, and is believed to be planning the creation of a new political movement or party, which polls show would be supported by about 20% of voters.