brussels premier belgium flanders region see separatist frictions past denounce spanish authorities friday arrest sack separatist catalan officials urge eu mediate dispute carles puigdemont dismiss madrid catalan leader region unilateral declaration independence travel belgium fail appear spanish court thursday answer charge rebellion nine associate remand custody madrid pending possible trial lock democratically elect leaders bridge far flanders premier geert bourgeois say statement perplex something like possible today europe flanders home half belgium inhabitants also see separatist campaign past decades series constitutional review give broad autonomy regions keep lid tensions bourgeois flemish nationalist party n-va also part belgium federal government call european institutions mediate proposal already reject urgently call european entities finally take action look democratic solutions spain catalonia add european commission reiterate friday fully respect spain internal political judicial order flanders premier call eu take action catalonia