DUBAI, June 15 (Reuters) - Here are some factors that may affect Middle East stock markets on Sunday. Reuters has not verified the press reports and does not vouch of their accuracy.INTERNATIONAL/REGIONAL* GLOBAL MARKETS-Iraq unrest drives up oil; shares edge higher MKTS/GLOB* Oil prices climb again amid escalating violence in IraqO/R* Iraq says slows Islamist rebel advance, regains some territory