Nepal’s prime minister is prepared to face a no-confidence motion in parliament after former Maoist rebels who had backed his coalition withdrew their support but he sees no need to step down, an aide said. The impoverished Himalayan country has been plagued by political turmoil for years and the bid by the Maoists to unseat Prime Minister K.P. Oli and form a new government has ushered in another phase of uncertainty. Oli, who came to power in October when the Maoists offered his party parliamentary backing to build a coalition, faces the prospect of a no-confidence vote if he cannot persuade other parties to stick with him. The main Maoist party accuses Oli of reneging on past promises and is expected to move formally lodge a motion of no-confidence in the prime minister on Wednesday.