The world-wide struggle against terrorism began with the tragedy of 9-11-01 when al-Qaida, led by its leader, Osama bin Laden, hyjacked three domestic flights in the United States and crashed two of them into the twin towers of the World Trade Center in NY City and the other into the Pentagon in Washington, DC. This is a review of the responses made, beginning with the 'Teardrop Memorial' given by the people of Russia and so symbolic of the world-wide struggle with terrorism, and ending with what two Presidents of the United States have done about it.