First clue:
I'm no laughing matter.
But something there is that doesn't love my brother,
so you dug deep to create me.
Second clue:
I'm food.
I'm popular in Morocco.
But I'm even bigger in Israel.
Third clue:
I'm a special kind of armament,
which will help you propel an arm,
better than just your arm.
The question:
What capital city am I?
First hint:
The three clues are independent riddles; each has a different (and topically unrelated) answer, which is different from the answer to the question.
Second hint (for the third clue):
This is a Nahuatl-derived word.