During Mr Kim Young Sam's presidency, two former presidents, Chun Doo Hwan and Roh Tae Woo, were jailed for treason, insurrection and taking bribes.

ECONOMIST: South Korea

Choi refused to take part in the trial of his convicted successors Chun Doo Hwan and Roh Tae Woo, the men who ousted him from power.

CNN: NEWSMAKERS

He was convicted in 1996 of bribing former South Korean president Roh Tae-woo but pardoned a year later by then-president Kim Young-sam.

WSJ: South Korea Plans to Pardon Former Samsung Chairman