(Adds UAE&aposs Arabtec story)DUBAI, June 24 (Reuters) - Here are some factors that may affect Middle East stock markets on Tuesday. Reuters has not verified the press reports and does not vouch of their accuracy.INTERNATIONAL/REGIONAL* GLOBAL MARKETS-Asian shares muted, currencies in well-worn ranges MKTS/GLOB* Brent crude falls again as Iraq supply fears ease O/R* Gold rises on Iraq, S&P drop; p