A Gallup poll released Thursday showed that for the first time since 2007, voters were just as likely to call Democrats the better party to fight terrorism as they were to name Republicans. Polls have consistently shown that about two-thirds of voters believe the Afghan war, once a symbol of necessary U.S. intervention, is no longer worth fighting.Jamie Fly, who heads the conservative Foreign Policy Initiative, said it’s been a challenge for Republicans to convince a war-weary U.S. electorate that President Barack Obama’s more cautious, consensus-oriented approach to foreign policy has been a failure.