http://www.youtube.com/AllNews2013\nآخر أخبار العالم جميع 2013\nA powerful blast has struck the Syrian capital - killing 31 people and injuring dozens more. The explosion also caused severe damage - shattering windows and sending a cloud of smoke above the city.It comes as the Free Syrian Army opposition group has given Hezbollah a 48-hour deadline to stop shelling its locations from neighbouring Lebanon. Middle East expert Tariq Ali shares his opinion with RT - READ MORE \n\nRT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 500 million YouTube views benchmark.