DAMASCUS, Syria (AP) — Syrians poured into streets echoing with celebratory gunfire on Sunday after a stunning rebel advance reached the capital, putting an end to the Assad family's 50 years of iron rule but raising questions about the future of the country and the wider region. Joyful crowds gathered in central squares in Damascus, waving the Syrian revolutionary flag in scenes that recalled the early days of the Arab Spring uprising, before a brutal crackdown and the rise of an insurgency