Gonzalo Higuain scored a hat trick and Argentina beat South Korea 4-1 at the World Cup on Thursday, putting the South Americans on the brink of qualifying for the next round.Argentina took the lead in the 17th minute when Park Chu-young deflected in a free kick from Lionel Messi. Higuain made it 2-0 in the 33rd after Nicolas Burdisso passed along a cross from Maxi Rodriguez.In first-half injury time, Lee Chung-yong pounced on a defensive mistake to close the gap, but Higuain's two second-half goals - in the 76th and 80th minutes - put the game away.Argentina leads Group B with six points off two victories and one game remaining in group play.