BRAZIL'S PRESIDENT LUIZ INACIO LULA DA SILVA SAID ON THURSDAY HE SAW NO ALLIANCE BETWEEN BOLIVIA AND VENEZUELA OVER BOLIVIA'S NATIONALIZATION OF ITS ENERGY SECTOR, ACCORDING TO REUTERS. LULA, SPEAKING AT A NEWS CONFERENCE AT THE END OF AN EMERGENCY SUMMIT OF THE LEADERS OF BRAZIL, BOLIVIA, VENEZUELA AND ARGENTINA, SAID THE MEETING WAS A SIGN TO INVESTORS OF REGIONAL DIALOGUE. VENEZUELAN PRESIDENT HUGO CHAVEZ HAS LAUDED THE BOLIVIAN MOVE. BRAZIL AND ARGENTINA ARE THE MAJOR IMPORTERS OF BOLIVIAN NATURAL GAS AND ARE WORRIED ABOUT GAS SUPPLIES AND PRICES.