By Khaled Yacoub Oweis and Alistair Lyon AMMAN/BEIRUT, Feb 23 (Reuters) - The Syrian military pounded rebel-held Sunni Muslim districts of Homs city for the 20th day on Thursday, despite international outrage over the previous day's death toll of more than 80, including two Western journalists, activists said. Tanks pushed into part of the Baba Amro neighbourhood which has taken the brunt of the bombardment, activist Abu Imad said.