Since December, Israelis have resided in the front part of a house where Palestinians have long lived. All that separates them is a bedroom wall, a sealed door and, lately, the police, who visit regularly to break up the fights.

The Jewish occupants accuse the Palestinians of throwing rocks through the windows and wielding sticks. The Palestinians say the Israelis brandish rifles and pepper spray when the police aren't around.

Even in a city like Jerusalem, where people of different faiths have lived side by side, often uncomfortably, for millenniums, the battle of wills and square footage at House No. 13 Othman Ibn Afan frames the Israeli-Palestinian conflict in almost unbearable close-up...