Deleting photos in iPhoto

When you are browsing an iPhoto album and press `delete`, the picture is not deleted, but only removed from the album. This isn’t really helpful when you are trying to prune your photo albums.  Instead, you’d have to flag the photo, move to events or photos, find the flagged photo’s, and press delete again (simply selecting flagged doesn’t cut it). This is very tedious.

But I found the solution: