TRANSPARENCY International has thrown down the gauntlet to Panama law firm  Mossack Fonseca, center of the "Panama Papers" scandal, and challenged  it  to discuss corruption in the financial system at a global conference in Panama, Dec.1-4.

"Transparency International definitely invites the people of Mossack Fonseca to come,"  said Roberto Pérez Rocha, director of the 17th International Anti-Corruption Conference (IACC

"I extend an invitation (to Mossack Fonseca) to come and discuss openly what transparency in the financial system means," Perez added.

About 1,200 experts will address corruption issues at the conference, including those related to financial systems.

The agenda of discussions includes the Panama Papers, a leak that revealed how Mossack Fonseca created opaque societies for personalities from around the world, many of which could have served to evade taxes or laundering money from illegal activities.

Several journalists who reported on the case will analyze the scope of the scandal, which caused the resignation of the Prime Minister of Iceland and a Spanish minister, as well as linking former British Prime Minister David Cameron, Argentine President Mauricio Macri and soccer player Argentine Lionel Messi, and others to tax avoidance.

Perez extended the invitation to other actors who have participated in the creation of opaque societies, since "there is a global debate now and the worst we can do is hide."

"We are going to stand face to face discussing it" because financial systems are the "most corrupt" on the planet and facilitators are " create practically all the atrocities we suffer as citizens," he said.