EMERGING MARKETS-Brazil stocks struggle to advance after recent surge

By Asher Levine SAO PAULO, April 14 (Reuters) - Brazilian stocks struggled to advance on Monday but remained close to recent highs, while the country's currency strengthened, outpacing its regional peers. Brazil's Bovespa index has gained about 15 percent since local stocks began rallying on March 17 and reached its most recent peak on April 8, driven by rising risk appetite among global investors and heightened expectations for a change in economic policy following October's presidentia