evidence: Since the 20th century the relationship has evolved with ups and downs mostly regarding the Colombia–Venezuela maritime territory dispute over the Gulf of Venezuela. The lowest point in the relationship occurred on August 19, 1987, after the Colombian corvette ARC Caldas (FM-52) trespassed into disputed waters and then President of Venezuela, Jaime Lusinchi, ordered the Venezuelan Air Force to the area. The standoff was resolved through diplomatic channels but the dispute remained.[7] [...] In 1939 the Venezuelan government issued a decree imposing a maritime border line from the village of Castilletes in Guajira Peninsula to Paraguaná Peninsula which result in most of the Gulf belonging to Venezuela. The Colombian government reacted to this in the late 1940s asking the Venezuelan government to rectify and draw a middle line in accordance with the United Nations Convention on the Law of the Sea. [...] - ^ "VENEZUELA Y COLOMBIA MIRAN A SUS FRONTERAS - Archivo Digital de Noticias de Colombia y el Mundo desde 1.990". eltiempo.com (in Spanish). Retrieved 2015-09-04.