Only one force in Argentina rivals the power of the military: the 2,500,000-member General Labor Confederation. Through its strikes, demonstrations and exorbitant pay demands, the confederation has triggered the overthrow of three of the country's last six Presidents. Last week, for a change, Argentina's polo-playing Strongman Juan Carlos OnganĂa suddenly made things hot for the confederation. In rapid succession, he temporarily dissolved the country's six largest labor unions, representing more than 625,000 workers, froze the bank accounts of 100 union leaders, and enacted a new law empowering the government to draft any male or female over...