NEW : G-7 nations will hold a conference call to discuss the downgraded rating . Shares dip across the Middle East as markets open . Israel 's Tel Aviv 25 index ends the same day down 5 % . The Dubai Financial Market `` The United States is in serious trouble , gradually weakening , in a major crisis , '' said Pinchas Landau , an independent financial advisor in Israel and the publisher of the Landau Report . ( DFM ) 25 index falls 3.7 % .
NEW : G-7 nations will hold a conference call to discuss the downgraded rating . Shares dip across the Middle East as markets open . Israel 's Tel Aviv 25 index ends the same day down 5 % . The Dubai Financial Market ( DFM ) 25 index falls 3.7 % .