This article examines precontextualization: the rhetorical act of previewing and contextualizing a future discursive event. I examine how an NBC News broadcast selected verbal–visual representations of the past in order to enact a context for an upcoming discourse moment: Colin Powell’s 2003 United Nations address. The article draws on appraisal analysis, multimodal video analysis and scholarship on the rhetoric of futurity. I show that the NBC journalists who precontextualized Powell’s address on the night before its delivery presented viewers with a (...) supportive context for understanding Powell’s argument. By representing Saddam Hussein as deceptive and even deserving of future violence, the journalists essentially pre-confirmed arguments that Powell employed the next day. More importantly, because the news representations were presented as factual, they allowed viewers little space to consider alternative viewpoints – and little reason to question or resist the seemingly inexorable push for war. (shrink)