Pittsburgh may be known for its steel mill past and its high-tech present, but is now emerging as the seat of a lively debate concerning Palestinian food, free speech, and criticism of Israeli policies. The Conflict Kitchen is a take-out eatery that only serves food from countries with which the United States is in conflict. The restaurant began serving Palestinian food on October 6. On November 8, restaurant co-director Jon Rubin received a letter containing a death threat. As a result, Mr. Rubin temporarily closed the Conflict Kitchen.