White House : Israel launched a military offensive in Gaza on December 27 to stop Hamas rocket strikes on southern Israel . Web message shows bin Laden 's isolation . Speaker says global economic crisis is reducing U.S. involvement in the region . Audio message posted on radical Islamist Web says jihad in Gaza 's future . Speaker 's voice was similar to recordings that bin Ali has made in the past .
White House : Web message shows bin Laden 's isolation . Speaker says global economic crisis is reducing U.S. involvement in the region . Audio message posted on radical Islamist Web says jihad in Gaza 's future . Speaker 's voice was similar to recordings that bin Ali has made in the past .