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The Yemenia Airways building burns to the ground amidst clashes in Yemen's capital Sana'a:
2216 GMT: We have conflicting reports from Yemen, but Abe Alansy , who has been the fastest source to update information, is Tweeting that the situation is now calm in Sana'a, Yemen, though it is entirely possible that this is subject to change. There are reports of casualties, but any numbers are likely to be unreliable until daybreak.
In Libya, an opposition website is claiming multiple victories today near the city of Yefren (updated since our post at 1446 GMT).
We're taking a break here and preparing for a very busy day tomorrow morning. In Syria, we'll be watching "Children's Friday," in Yemen the growing violence around the capital, in Bahrain the funeral of the most recent martyr, and in Libya the advance of rebel forces. It's going to be another busy Arab Spring Friday.
We'll pick up our coverage at 0530 GMT tomorrow.