Humberto Calderón Berti

Humberto Calderón Berti (born 21 October 1941 in Boconó, Venezuela) is a Venezuelan geologist, petroleum engineer, diplomat, politician and author, named in 2019 as ambassador to Colombia by disputed interim Venezuelan president Juan Guaidó during the 2019 Venezuelan presidential crisis, and welcomed by Carlos Holmes Trujillo, Colombia's foreign minister. Provided by Wikipedia