Translate the following.

English: Many military officers were deeply vexed by the fact that what they believed they had won on the battlefield was snatched away from them at the negotiating table. Equally vexing was that they believe this only happened because of the changes in the international scene with the end of the conflict between communist socialism and anti-communist capitalism, and because of the political influence the URNG was able to win among the Group of Friends of the Peace Process, including Norway, Mexico, the United States, Colombia, Spain and Venezuela.

Spanish:
De muchos militares, porque se disgustaron profundamente de que les arrebataran en la mesa de negociación lo que creían haber ganado en el campo de batalla, y ese despojo, sólo por los cambios en la escena internacional con el final de la guerra fría y de la contradicción entre socialismo comunista y capitalismo anticomunista, y con el peso político que la guerrilla supo ganarse en el Grupo de Amigos del proceso de paz (Noruega, México, Estados Unidos, España, Colombia y Venezuela).