What's the latest with ISIS?

Its ranks are swelling with co-opted "moderates":

The Syrian rebel militia Al Yarmouk Shuhada Brigades, backed and trained for two years by US officers, mostly CIA experts, in Jordan, and supported by the Israeli army, has abruptly dumped these sponsors and joined up with the Islamic State in Iraq and Syria, DEBKAfile’s exclusive military and counter-terrorism sources reveal.

The sudden defection of this 2,000-strong anti-Assad force leaves IDF defense formations on the Golan, US and Jordanian deployments in the northern part of the kingdom, and pro-Western rebel conquests in southern Syria in danger of collapse.

The Brigades’ jump into the radical jihadi camp was negotiated in the last two weeks by its commander Mousab Ali Qarfan, who also goes by the name of Mousab Zaytouneh. He was in direct contact with ISIS chief Abu Baqr Al-Baghdadi, whom our sources report has recently relocated from Iraq to his northern Syrian headquarters at al-Raqqa.

And it doesn't take well to having its romantic overtures spurned:

“At least 150 females, including pregnant women, were executed in Fallujah by a militant named Abu Anas Al-Libi after they refused to accept jihad marriage,” said the Ministry. “Many families were also forced to migrate from the province’s northern town of Al-Wafa after hundreds of residents received death threats.”

The militants buried the victims in mass graves in the city. The families who left lost many children after they were stranded in the desert. 

The Islamic State slaughtered over 50 people from the Al Bu Nimr tribe in Iraq’s Anbar Province on November 2. The massacre included six women and four children. Witnesses said the militants lined up the victims, whom they “publicly killed one by one.” Over seventeen people were kidnapped, as well. Militants murdered 98 people from the same tribe 24-48 hours before the massacre. The tribe is Sunni, which holds the same belief of Islam as the Islamic State, but now, they view the tribe as a threat.

And that's the way it is.