SEOUL, March 3 (Yonhap) -- A Korean-American pastor who went missing earlier this year in Myanmar is presumed dead, a South Korean civic activist claimed Thursday. The pastor, identified as Jeffrey Bahk, was swept away by strong currents while trying to swim across the Mekong River on Jan. 2, said Chun Ki-won, director of Seoul-based Durihana Missionary Foundation. Bahk, 63, appeared to have drowned while attempting to cross the river from Myanmar to Laos with six North Korean defectors he reportedly met in Jilin and Yanji, China, in November. "I saw him enter the river, but that was the...