CBS News chief foreign affairs correspondent Lara Logan, who just relocated to Washington DC, was the first correspondent to interview Barack Obama during his just-begun, but much talked-about overseas trip. The discussion happened today in Afghanistan and aired this morning on Face the Nation and on CBS Evening News. Politico's Mike Allen reports, of the three network anchors covering the overseas trip Katie Couric will go first, interviewing Obama on Tuesday "in a country that the campaign does not want named for security reasons." Charles Gibson gets Obama on Wednesday, and Brian Williams will go Thursday. Allen writes, at least...