A moment when the wrong word could cause a lot of trouble.

"One parent may have to take time off from work to stay home with him, and that can cause a lot of problems."

My next point may cause a lot of trouble for some who have been with me up to now.

They cause a lot of damage to anything in the path.

And once in, they can cause a lot of damage.

And he was going to cause a lot of problems for a particular government some forty years down the line.

Your grandfather could cause a lot of trouble, you know.

He would not want to cause a lot of trouble.

This might cause a lot of problems in the future because they can be lost forever.

And enough to cause a lot of damage even to Russia!