Prince Harry's exit speech: 'There was no other option'

This speech is one of the best in my recent memories....

ASK: Answer the following questions
1. How many 'we' did you hear from the speech?
2. How many times did he mention the queen, directly and indirectly, in the speech?
3. What is the purpose of this speech?
4. What reasons are cited as reasons behind his departure?
5. Why did he use the idiom ' a leap of faith'?
6. The word 'so' has been used by the prince in several accessions throughout his speech. Which 'so' is an adverb? Which is a conjunction?
7. What are metaphors used in the speech?