Nepal’s ruling party has merged with a former Maoist rebel group to form a super bloc that experts say will reshape politics after years of turbulence in the Himalayan nation. Officials said yesterday the new alliance, the Nepal Communist Party, was formally signed into agreement following late-night negotiations between the two sides on Monday. They forged a political alliance to trounce the incumbent party in last year’s landmark general elections, but this formal merger creates a political behemoth unprecedented in Nepali politics. “This is an agreement to merge, but there are other issues we need to conclude before we completely unify,” senior Maoist leader Narayan Kaji Shrestha said, adding the transition process was expected to take at least a month. The new alliance commands a large majority in both houses of parliament, and comes just days after Communist leader K P Sharma Oli was sworn in as prime minister. Oli’s main Communist party and the Maoists heavily defeated the incumbent Nepali Congress party in polls last year billed as the final step in a post-war transformation to a federal republic. The Maoists, who fought government forces in a bitter civil war that claimed more than 16,000 lives and overthrew Nepal’s 240-year-old monarchy, dominated politics for more than two decades. The decade-long conflict ended in a 2006 peace deal that saw guerrilla leader Pushpa Kamal Dahal become Nepal’s first post-war prime minister. But their political support has waned in recent years, with their party ranking third in last year’s general elections. Political historian Aditya Adhikari said the merger was a “rare union” between two sides with starkly different backgrounds. The ruling Communist party is older and considered more conservative than its new partners in the Maoists, who have pursued more progressive politics in the post-war era. “If they manage to stick together it will change the future of Nepal’s politics,” said Adhikari, author of The Bullet and the Ballot Box, a history of Nepal’s Maoist struggle. “But they will likely function as a coalition or two factions within a party, negotiating power sharing.” A rumoured agreement to share power between Prime Minister Oli and Dahal, the Maoist leader, has provoked criticism amid concern this alliance could destabilise politics down the track. Brittle alliances have been struck between Nepal’s three dominant parties since 2008, and there are fears this latest merger could prolong the revolving door nature of the country’s politics. Oli has been prime minister once before, while Dahal has served in the top office twice. Many voters cast ballots in last year’s elections hoping for stability and much-needed development in the impoverished Himalayan nation. The last government – a coalition between the Maoists and the Nepali Congress party – was the country’s ninth in just 11 years before the alliance fractured. Communist leader K P Sharma Oli and top Maoist Pushpa Kamal Dahal of ruling Left Alliance sign an agreement on unification of the two parties in Kathmandu yesterday.