He treats us as a big friend.

Bioterrorism is a serious threat to modern society.

We all wish for world peace.

He spends a lot of time for peacekeeping.

He is a pacifist and absolutely does not support war.

No problem, I will do that job.

That proposal is completely unthinkable.

As a practical question, how are we going to fund this project?

This exam is a matter of life or death for me.

He is viewing that situation as a serious problem.