In The Boy in the Striped Pajamas, what actually happened to the boys at the end? Did Bruno die?

In The Boy in the Striped Pajamas, what actually happened to the boys at the end? Did Bruno die?

 
In The Boy in the Striped Pajamas, what actually happened to the boys at the end? Did Bruno die?
In The Boy in the Striped Pajamas, what actually happened to the boys at the end? Did Bruno die?