1.   And while demand is the core problem, oversupply of many commodities also plays a role.

2.   All the previous talks dealt with peripheral issues, not the core problems of Jerusalem, Palestinian statehood, refugees and Jewish settlers.

3.   But a less-discussed provision mandated treatment insead of prison for certain nonviolent offenders, mainly criminals whose core problem was drug addiction.

4.   But a less-discussed provision mandated treatment instead of prison for certain nonviolent offenders, mainly criminals whose core problem was drug addiction.

5.   But the core problem these days is controlling costs and remaining nimble.

6.   But the administration might also fix the core problem.

7.   But the settlements are not the core problem.

8.   But the plan was criticized Saturday for not addressing the core problem.

9.   But this time, when the core problem may be more psychological than financial, the Fed may have little leverage over the economy.

10.   Once core financial problems are addressed, Washington must press for other reforms.