Islamic State expands territory in Syria, Iraq and Libya
Clip: 05/21/2015 | 2m 52s
The Islamic State made significant gains this week. The group seized Palmyra in central Syria, prompting a plea from UNESCO to spare world-renowned Roman ruins. In Iraq, militants followed up their capture of Ramadi by overrunning Iraqi military positions to the East. And in Libya, they took the city of Sirte. Gwen Ifill reports the cascade of victories raises questions about the fight against IS.
Aired: 05/21/15
Expired: 06/20/15
