By Rodrigo Campos and Libby George NEW YORK/LONDON (Reuters) -A rally in Argentina's international dollar bonds fizzled on Thursday after U.S. Treasury Secretary Scott Bessent said the U.S. is "not putting money into Argentina" shortly after saying that upcoming in-person discussions in Washington would "meaningfully advance" the country's pledge of financial support for President Javier Milei's government. Bonds, which rose roughly two cents after Bessent's initial comments, traded negative shortly af ...