At 8:46 a.m., five hijackers crashed American Airlines Flight 11 into the northern facade of the World Trade Center's North Tower (1 WTC). At 9:03 a.m., another five hijackers crashed United Airlines Flight 175 into the southern facade of the South Tower (2 WTC).
So many countries were allied or opposed to one another that no one expected that there would be a war, especially the one with the horrific consequences of world war one.