A new annual study of Transparency International illustrates Afghanistan, Somalia and North Korea as the most corrupt countries among 176 in the world.

Afghanistan is the second most corrupt country in the list of 176 countries ranked in the report.

Meanwhile, Executive Director for Integrity Watch Afghanistan (IWA) Mohammad Ikram Afzali is concerned over the Afghan government's anti-corruption campaign and recommended a number of changes to this drive.

"The fight against corruption should be the top priority of the National Unity Government [NUG]. There should be a political will for this purpose," he said.

"The NUG has not implemented its promises it has made for overcoming the endemic corruption in the country," said Nasir Temori, a researcher at the IWA.

The Chief Executive of the NUG, Abdullah Abdullah, in a session with UN and other humanitarian organizations said they are committed to fighting endemic corruption.

"There is no doubt in the NUG's mind it is serious about the fight against corruption in public offices," he said.

The NUG leaders in the first day in their office vowed to overcome corruption in government offices and bring transparency in government contracts and other processes that pave the way for this problem.

"Not only government but the people, the civil society and the private sector are responsible to join hands and fight corruption in the country," said the president's deputy spokesman Sayed Zafar Hashemi.

According to the annual report of Transparency International, Denmark, Finland and Sweden are the top three countries with no corruption.