The White House is now openly pushing for replacing Egypt President Hosni Mubarak with a temporary caretaker government that includes the military and is applauding a decision by Mubarak’s son to step down as head of the country’s ruling party. But a senior administration official said those steps weren’t enough - and suggested that Mubarak needs to take “additional steps” to quell the chaos in the streets of Cairo, which is threatening to sink Egypt’s already foundering economy. Secretary of State Hillary Clinton, speaking to a conference of allies in Munich, Germany, on Saturday, expressed support for a transition effort...