BEIRUT, Lebanon , Aug. 26 (UPI) -- U.S. Special Envoy Thomas Barrack said Tuesday that Israel will respond "step-by-step" to Lebanon's anticipated disarmament plan for Hezbollah , to be presented Sunday, with a "counter-proposal" related to its potential withdrawal from occupied Lebanese territories and its requirements for border security guarantees. Barrack, the U.S. ambassador to Turkey and special envoy to Syria, arrived in Beirut accompanied by Deputy Special Presidential Envoy to the