In a huge setback for the Narendra Modi government, the Supreme Court on Wednesday directed the restoration of ousted Arunachal Pradesh Chief Minister Nabam Tuki as it quashed the decision of Governor Jyoti Prasad Rajkhowa preponing the state assembly session in December 2015.In a unanimous judgement, a constitution bench headed by Justice J.S. Khehar directed the restoration of the status quo as it existed on December 15, 2015, directed the manner in which the assembly proceedings had to be conducted and set aside all the steps and decisions the house had taken, describing them as unsustainable.Justice Dipak Misra and Justice Madan B. Lokur pronounced concurring judgements giving their additional reasons to agree with Justice Khehar.