article_snippet: But so far, it seems calls for calm from around the world have done little to quell the violence.
article_snippet: No one was injured, but the direct strike marked an escalation in the deadly fighting between the two sides.
article_snippet: There are growing concerns that terror groups such as al Qaeda in the Arabian Peninsula and ISIS could take advantage of the chaos to mount attacks and spread al Qaeda in the Arabian Peninsula and ISIS reach.
article_snippet: Bombings at two mosques in Sanaa Last week killed at least 137 people and wounded hundreds more.
article_snippet: ISIS claimed responsibility in a statement posted on a site that has published previous statements from the group.
article_snippet: Journalist Hakim Almasmari reported from Sanaa, CNN's Catherine E. Shoichet reported from Atlanta and CNN's Richard Roth reported from the United Nations.
article_snippet: CNN's Anas Hamdan, Greg Botelho, Hamdi Alkhshali, Ed Payne and Laura Koran contributed to this report.