President John Dramani Mahama has called on all political leaders in the country to bury their differences and collaborate with him to execute his mandatory duties as the President of the Republic.

He said the passing of President John Evans Atta Mills was not only traumatising, but shocking and therefore needed concerted efforts for the country to recover from its political tragedy.

President Mahama made the call when Ms Samia Nkrumah, Chairman of the Convention Peoples Party (CPP), led a delegation to call on him at the Castle, Osu.

Apart from signing the book of condolence opened in memory of President Mills, the delegation was also at the Castle to congratulate President Mahama for assuming his new position as President of the Republic.

President Mahama said as a human being, the late President could have made some mistakes, but his adherence to the virtues of modesty, honesty, patience and tolerance would forever remind Ghanaians of his leadership style.

He gave the assurance that a date for the funeral of the late President would be announced as soon as consultations between the Presidency and the family were finalised.

Ms Nkrumah commended President Mills for eulogising her late father, Dr Kwame Nkrumah, by celebrating his centenary, declaring his birthday as a public holiday and the use of his photograph on the two-cedi note.

She said although she declined to form an alliance with the NDC after the 2008 elections, the CPP would continue to collaborate with the government to ensure peace and stability in the country.

Dr Abu Sakara, presidential candidate of the CPP for the 2012 election, who congratulated President Mahama for assuming the position of President, said the late President had widened the leadership spectrum on the continent by his tolerance and modest leadership style.

He suggested to president Mahama to establish a library and name it after the late President as a sign of immortalising him.