She just wanted to vent with somebody about some difficult subjects.

In part they avoid the need to talk of difficult subjects.

"I feel like all that difficulty was meant to be, because it's a very difficult subject."

Many thanks for a fair discussion on such a difficult subject!

This is a difficult subject and they have both done a fine job.

Turning to Kosovo: this is a difficult subject for all of us, particularly in my group.

I know she has worked very hard over many months on this difficult subject.

"A difficult political subject for a young man to understand," he said.

Now would be the time to introduce a difficult subject of my own.