Instead of contacting Pakistani officials and offering condolences or making comments consoling the people of Pakistan or even expressing concern about the political situation there, Obama’s reaction was to attack Hillary Clinton and her Iraq war vote as shown in this article in the Washington Post http://www.washingtonpost.com/wp-dyn/content/article/2007/12/27/AR2007122702514.html . At a campaign stop, the post quotes Obama as saying, "I've been saying for some time that we've got a very big problem" in Pakistan, Obama said. "We were distracted from focusing on them.” The same Post article has Obama not offering any remotely Presidential reaction for over 24 hours after the assassination, long after Edwards had spoken with Musharraf and expressed concern for the democratic process in Pakistan.
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