ISTANBUL (Reuters) - The  planned independence referendum in northern Iraq s Kurdish region is a  terrible mistake  that will trigger new crises in the region if it is not canceled, Turkish President Tayyip Erdogan s spokesman said on Saturday.  If the referendum is not canceled there will be serious consequences. Erbil must immediately refrain from this terrible mistake which will trigger new crises in the region,  spokesman Ibrahim Kalin wrote on Twitter. 