Suicide attack kills 4 in Istanbul shopping hub

A suicide blast ripped through a major shopping district in Istanbul on Saturday, killing three Israelis and one Iranian less than a week after another deadly attack left 35 dead in Ankara. The sixth major bombing in Turkey since July targeted Istiklal Caddesi, a bustling two-kilometre-long pedestrian street usually thronged with shoppers, tourists and buskers but which was still relatively quiet when the bomber struck on Saturday morning. "This is a suicide attack, a terrorist attack," said Ist