Eleven years ago, a little-known Colombian diplomat pushed 193 countries to sign the Sustainable Development Goals. Today the biggest signer is gone, no one has moved to replace it, and an Ebola outbreak in Congo is showing what that costs. Some 250 people in Congo are dead . The World Health Organization, which has declared a global emergency, says the true toll is higher . The U.S.-funded system that once helped to contain similar outbreaks has been dismantled. But Paula Caballero — who made