When and why does the American public support war? Washington politicians and pundits often puzzle over these questions as they try to win support for their policies, but there is a large body of academic research on public opinion and war. Do events, such as casualties or the prospect of victory, affect support more, or do partisan identities or other attachments play a larger role? What sorts of arguments should hawks and doves make if they hope to win support for their views? Please join four leading political scientists as they examine the causes of public support for war.