DUBAI, June 19 (Reuters) - Here are some factors that may affect Middle East stock markets on Thursday. Reuters has not verified the press reports and does not vouch of their accuracy.INTERNATIONAL/REGIONAL* GLOBAL MARKETS-Asia stocks rise on Fed optimism, dollar struggles MKTS/GLOB* Brent rises above $114 on Iraq worries, U.S. crude dipsO/R* Gold holds gains as Fed cuts economic view; platinum cl