There is rising disillusion among liberals and peace activists that a president who built his campaign on his opposition to the war in Iraq now views America's other conflict as a "war of necessity". Mr Obama has already added 21,000 extra troops to the 38,000 stationed there by George W Bush. In the next few weeks, he is likely to receive requests from the Pentagon for more when Gen Stanley McChrystal, the US commander in Afghanisan, submits a report on the progress of the war. It is expected to paint a grim picture and offer the president three options for...