What should be done to prevent such tragedies is a matter of debate.
But preventing similar tragedies in the future may be impossible.
He was out to prevent tragedy, and at the same time settle a score for justice.
Information must be fully shared so we can follow every lead to find the one that may prevent tragedy.
Maybe insights could prevent tragedies like this in the future.
Today fire regulations have been put in place to prevent such tragedies from happening again.
It's hoped the system will prevent tragedies like the M50 murder.
I hope to prevent tragedy in China, and in the world, with my writing.
Critics say that the Saudi government should have done more to prevent such tragedies.
"But as the judges have said, making a public sacrifice of an individual will not prevent further tragedies."
