Mongolia’s new president has been sworn in with a pledge to fight corruption.Tsakhiagiin Elbegdorj promised to use the nation’s natural resources to benefit the people. He won May’s election by a narrow margin against the Mongolian People’s Revolutionary Party. It was Mongolia’s fifth presidential election since a popular uprising overturned the pro-Soviet Union government in 1990. But corruption among government officials is still considered a problem. Taking the oath of office Elbegdorj said: “I strongly warn that any attempt to abuse one’s position should be stopped at all levels of government service from now on.” Mongolia has huge mineral deposits, including copper, gold and coal. Big foreign investors like Rio Tinto are poised to move in but negotiations have dragged on for years. In a show of state force after the swearing-in ceremony, troops staged a march through the central square of the capital Ulan Bator. .