2ND LD: Aso rejects opposition parties' calls to cancel cash benefit program+   Wrestling: Yamamoto to make comeback to women's wrestling+   6 countries lose Russian gas   Police officer, teacher arrested for having sex with 16-yr-old girl+   Pakistan criticizes India's Mumbai attack charges   Israeli troops approach Gaza population centers   JAC Japan to cut workforce by one-third+   Euro slips below $1.34 in European trading   Toyota to shut production plants for 11 days   Cambodia, Thailand to reopen talks on border dispute+   Report: Sanyo to cut 1,000 workers   Oil prices rally above $50 as gas row escalates   LEAD: 2 cab drivers assaulted in Osaka+   Europe's services sectors shrank in December   Japan's top CEOs say crisis shows US shortcomings   Colo.'s new senator relatively unknown to voters   EU says gas disruptions 'unacceptable'   EU says gas disruptions 'unacceptable'   LEAD: Gov't effectively abandons key goal of fiscal discipline+   Hong Kong's key stock index falls 0.4 percent