Virgilio Barco Vargas ( 17 September 1921 -- 20 May 1997 ) was the 27th President of Colombia serving from 1986 to 1990 .
Virgilio Barco Vargas ( 17 September 1921 -- 20 May 1997 ) was a Colombian politician , and civil engineer and member of Colombian Liberal Party . He served as the 27th President of Colombia from 1986 to 1990 .