The world must cooperate to avoid colliding satellites and space debris
When I read "avoid a catastrophic space collision", I thought about an asteroid hitting the earth and endangering life itself. Compared to that, a "catastrophic collision that knocks out one or more satellites key to their safety, economic well-being or both" sounds rather like an inconvenience. Of course, it could be "catastrophic" too, but there is catastrophe, and then there is catastrophe...