As war unfolds, Iraqi sleeper cells and al-Qaeda operatives aren't the only threats we face on the domestic front. Homegrown environmental radicals declared their own fatwa on the United States this week. And they're not just talking about lighting tea candles while they sing Bob Dylan tunes in their Birkenstocks. These anarchist menaces are deadly serious about undermining national security through physical and economic harm. In a manifesto published recently across left-wing Internet sites, infamous eco-thug Craig Rosebraugh called on his antiwar troops to take "direct actions'' against U.S. military establishments, urban centers, corporations, government buildings and media outlets. This...