::Of course nations that make war against each other are not allies. But the above statements show that the existence of blocs and external threats does not prevent wars, as the bloc peace theory claims.   
 ;;The bloc peace theory claims only that the members of a particular bloc did not make war against each other, since the bloc exists because of, and in order to implement, a common interest. It says nothing about wars outside the bloc; which may even be more likely.