Classification Table for International Relations (TCRI)
Starting in 1948, Castadilla and its preceding Estado Social regime has published a guide for the classification of international relations; it was primarily meant for diplomats, elected public officials, and even the average citizen. Indeed, the main purpose behind this guide was to inform the citizenry about which nations were considered to be friendly and which nations were considered to be unfriendly in the eyes of the government. It was not until the early 1970s when the Estado Social regime began to emerge out of its diplomatic near-isolation that the TCRI and its accompanying guide was first introduced to the world, with countries like Ardmore and Olmeria adopting their own variants of the TCRI. A printed edition of this guide is published annually, but with the rise of the internet there exists an online edition of the guide which is updated on a more frequent basis as changes in international relations occur.
Since the beginning of the Almadarian Civil War in 2036, the relationship between the northern Valverdist government in Almadaria and Castadilla has been very poor with the latter country having supported and aided the southern democratic government and its subsequent government in exile until its dissolution in 2038; all travel to territory under Valverdist control is strictly forbidden.
Relations between Burgundie and Castadilla have warmed considerably since the Velvet Revolution and the subsequent democratisation of the latter country, with numerous Burgoignac firms having established and maintained a presence in Portas Gemeas.
Relations between Cartadania and Castadilla have warmed considerably since the Velvet Revolution and the subsequent democratisation of the latter country, with numerous Cartadanian firms having established and maintained a presence in Portas Gemeas.
Relations between Pelaxia and Castadilla date back to the establishment of the Viceroyalty of Los Rumas in 1497 and the two have largely maintained very decent relations over the years, save for the occasional cooldown of relations such as after the end of the Viceroyalty in 1852.
Relations between Tierrador and Castadilla have historically been very warm and date back to the 19th Century at the latest. Both countries share a border through overseas territories in Peratra.
Relations between Urcea and Castadilla have historically been very warm, with the two nations having been members of LOTA throughout the Occidental Cold War. Relations cooled down a little during the 2000s and 2010s, but have since warmed up again since the Deluge
Relations between Volonia and Castadilla have been very warm for many years with the latter country having been a major player in the cause for the former's independence. The two nations maintain an open border policy with eachother and both Castadillaan and Volonian technological firms have frequently collaborated together on numerous projects.