Recently I read Shimon Peres's recollections of a conversation with Ben-Gurion regarding Trotsky, Lenin and the Brest-Litovsk peace treaty:
"One day, I was informed that Ben-Gurion would give me a ride from Tel Aviv to Haifa. At that time, it took two hours to do it. Imagine how excited I was! Here was my hero, my legendary man, and here was an unknown boy from nowhere. I thought, "My God, I'm going to have two hours with this man." It was a wintery day. I went to the car, and to my unpleasant surprise, he put on his coat, turned his back to me, and forgot about me.
I was sitting, so disappointed, up to the point we reached Haifa, very close to the place, and all of a sudden, he turned to me and he said, "You know, Trotsky was not a statesman." How did Trotsky arrive in the car at the last moment? I didn't know, but me being so much interested in having conversation, I said, "Why?" He said, "What do you mean why? What sort of a policy is that? No peace and no war? Either peace and pay the price, or war and take the risk. Otherwise it's a Jewish invention. It's not a political decision." And he said Lenin, who was intellectually inferior to Trotsky, became the leader of Russia because he made up his mind."
And I recalled what Altshuller told me in this regard:
"Lenin sent Trotsky to sign a peace treaty with Germany the price of which was unknown. When Germans demanded to cede Ukraine, Belorus and a portion of Russia Trotsky rightfully refused to sign such a peace because the Russian people would have never forgiven it to a Jew Trotsky. Instead he proclaimed: "Neither war nor peace !", - and Lenin was forced to send a Russian guy to sign such a horrendous peace.
Nobody knew back then that Germany would lose WWI and that a revolution would breake out in Germany, which would annul the predatory peace treaty. Conversely, with collapse of Russia and disintegration of its army it appeared that Germany was winning the war. There still were months ahead before the decisive offensive on the Western front brought Germany to its knees and revolution broke out in it. But after the fact Lenin claimed that he foresaw the defeat of Germany, the German revolution and the annulment of the treaty which was why he demanded a peace at any cost."
The story does not attest to that Trotsky was not a statesman but rather to that Lenin had a better crystal ball (or luck).