David Ignatius tells you what people in the Middle East want

According to him, the biggest beef people in the region have with the US is that it bombs them but it does not bomb them long enough and it does not occupy them long enough.  He cites this person as a conclusion: "“You’ll walk away,” said the priest. “That’s what you do.”"  Why can't the US bomb and occupy the region forever, so Arabs argue to David Ignatious.