BERLIN (Reuters) - Germany s deputy foreign minister said on Monday that developments in Catalonia were  worrying  and separatism was not the answer after a violence-marred independence vote was held in the northeastern Spanish region on Sunday.  Separatism doesn t solve any problems,  said German Deputy Foreign Minister Michael Roth.  All EU members should respect and strictly adhere to the principles and rules of the rule of law and democracy.  Roth also said political conflicts in the European Union should be solved via dialogue rather than with violence on the streets.  Both sides need to say they are prepared to do this,  he said after a violent police crackdown on the independence vote. A German government spokesman on Monday denied Spanish media reports that Spanish Prime Minister Mariano Rajoy had spoken to Chancellor Angela Merkel by telephone on Sunday. 