<p class="MsoNormal"><span style="color:#666666">Former Lebanese leaders are calling for the formation of an international investigation committee for the Beirut blast that shook up the already crisis-struck country on August 4. The horrific blast has killed at least 137 people, left dozens missing, at least 5,000 wounded and up to 300,000 homeless, a health ministry spokesperson said on earlier today. </span></p><p class="MsoNormal"></p>