WASHINGTON (AFP) – US president-elect Barack Obama Tuesday vowed to speak out about the Israeli-Palestinian conflict once he takes office, but insisted until then only President George W. Bush can speak for the US. "After January 20 I am going to have plenty to say about the issue," Obama told reporters, fending off criticism that he has failed to forcefully address the Israeli military onslaught on the Gaza Strip. Obama said he was sticking by his campaign pledge that "at the beginning of our administration, we are going to engage effectively and consistently in trying to resolve the conflict that...