Violence continues to engulf the Yemeni capital of Sana’a in the ongoing standoff over President Ali Abdullah Saleh’s refusal to step down. Yemeni forces reportedly fired on crowds of protesters today following an earlier round of shootings on Thursday. Street battles meanwhile are continuing between Saleh’s forces and anti-government tribal groups. At least 135 people have been killed in Sana’a in the past 10 days.