According to Wayne Madsen (Washington, DC-based journalist and columnist and the co-author of "America's Nightmare: The Presidency of George BushII) says:
A number of intelligence sources have reported that assassinations of foreign leaders like Hariri and Hobeika are ultimately authorized by two key White House officials, Deputy Chief of Staff Karl Rove and Deputy National Security Adviser Elliot Abrams. In addition, Abrams is the key liaison between the White House and Sharon's office for such covert operations, including political assassinations. Abrams is the guy they (the Israelis) go to for a wink and a nod for such ops.
Washington and Jerusalem media experts spun Hariri's assassination as being the work of Syrian intelligence on orders from President Bashar Assad. However, a number of Middle East political observers in Washington claim that Hariri's assassination was not in the interests
of Assad, but that the Bush and Sharon administrations had everything to gain from it, including the popular Lebanese uprising against the Syrian occupation.
Sharon’s interests in Lebanon are Hezbullah and water – While Washington is eyeing on a big airbase in that country. The Lebanese air base is reportedly to be used as a transit and logistics hub for U.S. forces in Iraq and as a rest and relaxation location for U.S. troops in the region. In addition, the Lebanese base will be used to protect U.S. oil pipelines in the region (Baku- Tbilisi-Ceyhan and Mosul/Kirkuk-Ceyhan) as well as to destabilize the Assad government in Syria and Revolutionaries in Iran. The size of the planned air base reportedly is on the scale of the massive American Al Udeid air base in Qatar.