After two Scandinavian women were killed while hiking in Morocco, an expert on Islamist movements has said it's hard to protect tourist-heavy regions from ISIS. The four men suspected of killing Louisa Jespersen, 24, of Denmark, and Maren Ueland, 28, of Norway, in Morocco's High Atlas mountains pledged their allegiance to ISIS earlier in a recorded video, the country's general prosecutor said on Thursday. According to a report from the Counter Extremism Project, Moroccan security forces have disrupted a number of ISIS-linked cells since as early as 2014. The country has faced fewer terror attacks in the last 15 years than its North African neighbors Algeria, Chad, Libya, Mali, Mauritania, Niger, and Tunisia, the Counter Extremism Project said.