By Kang Hyun-kyung
Staff Reporter
Decades ago, the cash-swallowing campaign environment was largely responsible for two former presidents, Chun Doo-hwan and Roh Tae-woo, being jailed for soliciting bribes and creating slush funds with money they received from conglomerates.
Lately, controversy here over ``missing leaders'' has erupted again, as another former president, Roh Moo-hyun, fell into the corruption trap, becoming the third to face questioning by prosecutors. This time, however, the motive is different.
Presidential studies expert Hahm Sung-deuk called self-proclaimed ethical leader