I don't think we knew, but it wasn't hard to guess. Osama bin Laden declared war on the United States in 1996. He, and Al-Qaeda, had been connected to multiple

I don't think we knew, but it wasn't hard to guess. Osama bin Laden declared war on the United States in 1996. He, and Al-Qaeda, had been connected to multiple terrorist attacks throughout the late 90s. The people who had bombed the World Trade Center in 1993 were trained by Al-Qaeda.