During the summit, a number of countries, participating in the summit, including France, Netherlands and the United Kingdom are expected to announce measures aimed at tackling corruption.
"I have been shocked by the degree to which I find corruption, pandemic in the world today," Kerry said, speaking at the London summit.
Dissatisfaction with the corruption promotes extremism and affects the elections in a number of states, including in the United States, Kerry said.
"The extremism that we see in the world today comes to no small degree from the other exasperation the people have, with the sense that the system is rigged and we see this anger manifesting itself in different forms and elections around the world, including ours. People are angry and the anger is gonna grow."
He added that the situation would continue unless, the international community could prove to people that the fairness could exist in the world.
