The Twin Towers was the loftiest symbol of the might and sway of the power that runs today’s society. This power is referred to in the Bible variously as ‘Babylon the great’, ‘the great city’, ‘the great harlot’.
In warfare there is a conditional surrender and there is an unconditional surrender of one party to the other. Conditional surrender is usually called a truce. The two warring factions negotiate a ceasefire by each conceding something to the other, with the stronger faction demanding more concessions than offering.
That title quote is from the novel The Last Days of America by Paul E Erdman. The book is a frightening tale of how an economic crisis could lead to major political upheavals and shifts in the global balance of powers, and bring civilization as we know it to the brink of extinction by nuclear holocaust.