frankfurt european union mediate secession crisis spain northern region catalonia madrid able handle situation french president emmanuel macron say tuesday macron speak ahead possible proclamation independence late tuesday carles puigdemont president catalan regional government would aggravate spain bad political crisis since attempt military coup 1981. europe france germany interfere catalan issue europe make sovereign state macron say visit frankfurt germany late meet chancellor angela merkel intervene catalan matter would interfere domestic affairs spain would intolerable prime minister spanish monarch macron back spanish prime minister mariano rajoy standoff secessionists feel oppress say continue hold firm line declarations support mariano rajoy disintegration say debate university students eu mediate catalan crisis france 's macron