There is a negotiating tactic where you try to convince someone that their potential allies have already surrendered, but it doesn't work when that person can just contact those allies directly.
They cannot be bargained with. They cannot be reasoned with. They don't feel pity, or remorse, or fear. And they absolutely will not stop. Ever. Until you are dead.
The US also based their global economic position on the fact that they were the only major country left standing after World War II. The rest of the world has rebuilt itself since then but America stayed on top because they were too big to fail. If they fail anyway they're never going to recover, since the circumstances that they originally benefited from don't exist anymore.
It's like that Batman episode where the Penguin left a "clue" for Batman with a bug in it and then used Batman's speculation on what it could mean to plot his next crime.
You receive:
'Cause the Greens aren't going to win, but they will make it easier for the Conservatives to win.