Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: 2/3 of a good book

After the disappointing Constant Gardener, I thought I might not even give this one a look--and sad to say, I should have saved myself the money. I think that after all these years, le Carre just can't keep his politics from interfering in his art. For 2/3 of the book, we have credible characters and an interesting plot; then it all goes away in a polemic with cardboard characters and a plot made up from the fantasies of the radical left. Too bad...he was always such a find writer.