Some experts say, "Al-Baguz village was the end of the caliphate which was announced by IS, but IS and other extremist terrorist organizations will continue to attract new members because the West has made only little progress in the field of the ideological battle."
Juan Zarate, senior national security analyst who served as deputy national security adviser to counter-terrorism in George W. Bush administration said, "As for what comes next, I think that these movements are adapting very quickly in practice."
Zarate believes that al-Qaeda, IS and similar organizations have been able to adapt, and that they will keep up their losses even partially at the moment because they have a long-term vision.
"The defeat will probably encourage IS to reconsider its actions, carry out an insurgency strategy like al Qaeda-style and hide among the weakest Muslim communities," Zarate said.
Experts say that IS' loss of lands which it occupied and announced them to be its so-called Caliphate is likely to lead the terrorist group to intensify its efforts to spread its ideology and recruit its followers on the internet because the so-called "Caliphate" was an effective tool to inspire the probable recruited and disseminate extremist ideas.
New Zealand attack
Matthew Levitt, a counter-terrorism expert at the Washington Institute says that IS wants to exploit New Zealand's attacks to incite hatred and incite anti-Western propaganda.
"They see the opportunity to influence people when they feel angry, weak and emotional. This presence in the virtual world is very real," Levitt said during a discussion on the "battle against extremism" at the Washington Institute.
According to Farah Pandith, the former American envoy to the Islamic societies, the United States and other Western powers need to make sure of intensifying their efforts to fight IS and other extremist groups ideologically.
"The counter-terrorism strategy after al-Qaeda's attacks launched on the United States in 11 September 2001 has underestimated the importance of fighting extremism on the ideological front, which in part has led to the emergence of groups such as IS," said Farah Pandith.