With political parties - Congress, Aam Aadmi Party - extending support to 'One Rank, One Pension' protests at Jantar Mantar, Defence Minister Manohar on Friday reiterated that all the assurances will be fulfilled by the NDA government.br br Addressing a press conference, the Union Minster said that though there are some technical difficulties, yet the government is working on the possible implementation of OROP.