A diplomatic crisis is brewing over Russia's potential sale of advanced missiles to Syria, a sworn enemy of Israel accused of supporting Hezbollah and Palestinian Arab terrorists. Israel's Channel Two TV reported yesterday that Russia plans to sell arms to Syria, including shoulder-fired missiles, which could threaten Israeli aircraft. In a separate report, the Russian newspaper Kommersant said the sale would include Iskander-E ground-to-ground missiles, which would give Syria the capability to strike almost anywhere in Israel. ...Russia last sold weapons to Syria two years ago, when Damascus purchased more than $130 million worth of Kornet and Metis anti-tank missiles......