In a wide-ranging midday press conference, President Obama took on Republican critics of his stance on Iran, directly targeting former rival Sen. John McCain (R-Ariz.) and saying, "I am the president of the United States." Obama, who has been accused by McCain and other Republicans of being too timid throughout the unrest following Iran's presidential elections, has gradually taken a firmer stance in the days following the election. . . . . . "The Iranian people can speak for themselves," Obama said in the James S. Brady Briefing Room. "That is precisely what has happened these last few days. In...