Daud Hassas, an advisor to the CEO, has said that all but one of the articles contained within the National Unity Government agreement – signed between President Ashraf Ghani and CEO Abdullah Abdullah in 2014 – have yet to be implemented.

"None of the articles of the NUG political agreement have been put into practice – except the one which says the administration is a national unity government. The Chief Executive [Abdullah Abdullah] has said at meetings with political figures in the country and envoys of foreign countries that the situation has to end," said Hassas.

Meanwhile, a number of analysts on Sunday said that the lack of coordination between NUG leaders will affect the administration and that the tensions have to end.

"From the first day of the NUG, people were concerned about the commitments of the NUG leaders and whether they would fulfill pledges. The two leaders have not exercised good coordination so far as they spent the first months of their administration overcoming rifts in appointing ministers and their deputies," said Hamid Elmi, writer and political commentator.

He added: "The NUG leaders have forgotten a number of important tasks – including the issuance of electronic National Identity Cards, holding the Loya Jirga [Grand Assembly] and bringing reforms to the electoral system."

Sahib Khan, an MP from Logar, meanwhile said he believes that the U.S Secretary of State John Kerry will again visit Afghanistan - if the NUG leaders' rifts are not resolved.

"We are faced with serious challenges including insecurity, economic problems and a number of political issues, but the NUG leaders have not ended their tensions so far. The morale of security forces will weaken and our provinces will fall to the Taliban if the situation prevails," he added.

Two years ago the NUG was established, but despite the agreement signed at the time, the NUG leaders have yet to meet their commitments.

Last week Abdullah criticized Ghani for not addressing the demands of the people – particularly regarding election reforms, which the two officials pledged following the establishment of the NUG in 2014.

Abdullah criticized Ghani's for not holding discussions. He said that a person who does not have the courage to discuss a topic is not qualified for "the chairmanship".

Ghani on Friday hit back at Abdullah over his remarks, and said he does not believe in those who do not believe in him.

Speaking at a gathering of youths on Friday, the president said that those who support corrupt elements in fact try to obscure the government's reform agendas.