Calm returned to Bolivia’s capital after troops led by a top general stormed the presidential palace, then quickly retreated, tumultuous scenes that threatened to pitch the long-troubled South American democracy into chaos. A day earlier on Wednesday, the nation of 12 million watched in shock and bewilderment Wednesday as Bolivian military forces appeared to turn on the government of President Luis Arce, seizing control of the capital’s main square with armored personnel carriers, crashing a tank into the palace and unleashing tear gas on protesters who flooded the streets.
