Counterterrorism Expert On What To Expect After Manchester

Authorities in the U.K. are beginning to put the pieces together in the aftermath of a deadly attack at a concert in Manchester, England.

Police say the suspected suicide bomber is 22-year-old Salman Abedi. Abedi was born and raised in Manchester and is the son Libyan immigrants who fled from former dictator Muammar Gaddafi.

According to Jessica Stern, coauthor of "ISIS: The State of Terror," the terrorism attack at the Manchester Arena follows a pattern. She says the attacks on soft targets are likely to get worse before they gets better.

Jessica Stern, professor at Boston University’s Pardee School of Global Studies and former member of the National Security Council. She tweets @jessicaestern.