There are protests from both pro and anti-government groups in Sana'a Yemen, Friday, as President Ali Abdullah Saleh vowed to "stand firm" in the face of calls for his resignation. Defections of high-level government officials has indicated that the opposition movement was gaining ground, but so far the president has refused to step down. Laura Kasinof, has been reporting from Sana'a for The New York Times.   Laura Kasinof earlier on The Takeaway: embed_audio( 'http://audio.wnyc.org/takeaway/takeaway032511-yemen.mp3', 'id1171125742004f78b9ddd-c9a3-41d6-a064-820f5670bfe8', 400, '', '' );