Sentence:  The anti-Americanism — or anti-Carterism, because Schmidt is basically pro-American — was in a way worrying, although if the dollar crisis is such an <WSD>amorce</WSD> for economic and monetary union, I am prepared, up to a point, to go along with it. 
Meaning of the word marked with <WSD> tags:  A hint about the future; an instance of foreshadowing.