Merkel vows coalition will push on despite jitters as SPD chief quits

Chancellor Angela Merkel vowed Sunday that Germany's government will push on with its work, even after her junior coalition partner SPD plunged into crisis following the resignation of its party chief.In a shock announcement earlier Sunday, Social Democratic Party (SPD) leader Andrea Nahles said she would resign from her party's top job, raising the possibility that Germany's embattled government could collapse.With the SPD in disarray, Merkel sought to quash speculation over the survival of the