Answer:
Hitler means that any alliance who doesn't want war to happen is senseless and useless. It's pretty self explanatory, but this proves that even thought Hitler was a soldier, his thoughts about making allies were all revolved around war.
Explanation:
"Any alliance whose purpose is not the intention to wage war" is saying that "any alliance who doesn't want war to happen."
Then, "is senseless and useless" is pretty self explanatory- it means basically what it says. So, put the translations together, and you get:
"Any alliance who doesn't want war to happen is senseless and useless."
