ISIS Blows Up Hostages, Spreads Like a Virus

ISIS jihadists in Syria have murdered three more hostages, this time by blowing them up.

Activists say the terrorists tied three unidentified captives to Roman-era columns in the ancient city of Palmyra and then used explosive devices to kill them.

A Palmyra activist said the killings took place at an archaeological site located a few miles away from the city.

The Islamic State caliphate captured Palmyra in May and since then it has destroyed ancient temples and other historic items.

Meanwhile, ISIS is quickly spreading and unleashing its terror throughout the Islamic world.

Afghanistan's national security adviser Mohammad Hanif Atmar warns that Islamic State terrorists have now become an "existential threat" in his country.

He says ISIS, al Qaeda, and the Taliban are reinventing themselves, joining forces and drawing funds and support from outside. They are taking advantage of weaknesses in Afghan forces following the end of the U.S.-led international combat mission last year.

"What needs to be well understood is that the symbiotic network of terrorists that we are confronted with is going to be a threat to every country in this region and by extension the whole world," Atmar said.

He said the Islamic State group now threatens Afghanistan's very existence because it no longer just includes disaffected Taliban, but has an "institutional connection" to the group's leadership in Iraq and Syria.

Turkey was already confronted with that deadly threat earlier this month when ISIS terrorists bombed Turkey's capital, killing 102 people.

Now Turkey is fighting back, launching raids Monday and Tuesday that killed seven suspected members of the Islamic State. They also captured 30 more in those raids.

Saudi Arabia is also facing a growing threat from the Islamic State.

An ISIS suicide bomber targeted a Shiite mosque Monday night, killing one person and wounding several more.

It was the fourth ISIS bombing against Saudi mosques since May.