Ahn Cheol-soo poses with his students at the Graduate School of Convergence Science and Technology at Seoul National University during a farewell ceremony for him in Suwon

 
Ahn Cheol-soo poses with his students at the Graduate School of Convergence Science and Technology at Seoul National University during a farewell ceremony for him in Suwon
Ahn Cheol-soo (C) poses with his students at the Graduate School of Convergence Science and Technology at Seoul National University during a farewell ceremony for him in Suwon, south of Seoul September 20, 2012. Ahn resigned as the dean of the graduate school. The latest runner in South Korea's presidential race, software millionaire Ahn, received a boost from the first poll taken after he declared his candidacy but is going to have to row back on his attacks on big business if he wins power. REUTERS/Sin Young-keun/Yonhap