In 1999, he received lots of criticisms for his acting on Kosovo, mainly because, by making Italy enter in war against former Yugoslavia, he would have not respected the italian constitution letter, namely in the article that cites "Italy repudiates war as an instrument offending the liberty of the peoples and as a means for settling international disputes", since he was going to enter a war without UN consensus.
Now, putting apart the stuff regarding the ethical considerations, there's something unclear to me on the amount of criticisms he suffered (and that he's most likely going to suffer again, with Italian troops in Lebanon): the vast majority of these criticisms came (and i'll bet they will come) from people who, not more than 30 years ago, were in groups theorizing violence/war as a necessary mean to solve class conflicts:
Nessuno o tutti, o tutto o niente, e solo insieme che dobbiamo lottare, i fucili o le catene: questa è la scelta che ci resta da fare. Compagni, avanti per il Partito, contro lo Stato lotta armata sarà (anthem of Potere Operaio)
E’ necessario prepararsi e preparare il movimento a uno scontro generalizzato, con un programma politico che ha come avversario lo stato e che ha come strumento l’esercizio della violenza rivoluzionaria, di massa e di avanguardia (document of the Lotta Continua group).
Paolo Cento, Marco Rizzo, Marco Boato, Francesco Pardi, don't you guys feel like ex-hardsmokers blaming a smoker for his conduct?