The Catalan declaration of independence was a resolution passed by the Catalan Parliament on 27 October 2017, declaring the independence of Catalonia from Spain and the founding of an independent Catalan Republic.
After saying that the resolution was valid and binding, Carles Puigdemont, President of Catalonia, said the following:
I thought this was one of the interesting international developments, outside of the Middle East and Russia. Spain political structure is unique. For reference, the United States is a mixture of a confederation (Spain) and a unitary government (France). Due to Spain extraordinarily decentralized style, it facilitates sentiments on issues like Catalan independence. I have not developed a personal opinion on whether Catalonia should succeed from Spain, or that Catalonia should remain in it. Nonetheless, given the Brexit scenario last year, I’ll be inclined to check this out further when it becomes developed over the upcoming months.