ISTANBUL (Reuters) - The Turkish far-left group DHKP-C has claimed responsibility for a suicide bomb attack at a police station in Istanbul's historic Sultanahmet district on Tuesday that killed one officer and wounded another. A female suicide bomber entered the police station saying in English that she had lost her purse before blowing herself up inside the three-storey building, across the square from the Aya Sofya museum and the Blue Mosque, which are among the main sites for millions of visitors to Istanbul each year. ...