The Economy & The Fiscal Cliff
• U.S. stocks increase in first day of 2013 trading following "cliff" deal
• With "cliff" deal reached, House members turn attention to Sandy bill
• Despite deal reached, budget fights anticipated over next coming months
• LIVE COVERAGE: Latest political news from Reuters
MOSUL, Iraq U.S.-backed Iraqi forces pushed deeper into western Mosul on Saturday, advancing in several populated southern districts after punching through the defences of Islamic State's last major urban stronghold in Iraq a day earlier.