EMERGING MARKETS-Latam markets sink as Ukraine, China fuel investor jitters

By Asher Levine SAO PAULO, April 15 (Reuters) - Latin American stocks and currencies dropped on Tuesday, with investor concerns over escalating tensions in Ukraine and potentially weaker growth in key trade partner China sapping enthusiasm for local assets. The MSCI Latin American stock index posted its biggest one-day drop in nearly eight months, while nearly every currency in the region weakened against the U.S. dollar. Demand for riskier investments fell across the globe after Ukr