Security sources confirmed that the issue of US security companies to protect the strategic transport line between Baghdad and the port of Trebil, the border with Jordan, provoked controversy between different political parties, in conjunction with the arrival of US special forces to the base of Ayn al-Assad, west of Ramadi.

Some sources said that the government signed an agreement with an American company, not named, to protect the road between Baghdad and Jordan. The company contracted with a group of other companies of different nationalities and will use the clans, prompting the fears of Popular Mobilization of dedicating the presence of US forces at the bases of Ayn al-Assad and Habbaniyah.

On the other hand, IS terrorist group used mustard gas against the Iraqi army unit with US and Australian advisers, leaving over 20 servicemen injured, according to CBS News. The incident occurred on Sunday with 25 Iraqi soldiers having been injured, the CBS News broadcaster reported. The foreign advisers sustained no injuries.
 
Brigadier General Yahya Rasool told the Associated Press that six soldiers suffered breathing problems from Sunday's attack and were treated in a field clinic. An investigation was then launched to determine what type of gas was used. Two Iraqi army officials told CBS News that gas masks and other equipment were given to soldiers as more attacks are likely to happen.
 
The attack marked the second chemical attack of its kind in several days. It occurred one day after an Iraqi military officer said IS militants launched a gas attack in the al-Abar neighborhood in western Mosul.

Meanwhile, the anti-extremism authority of the Kurdistan Regional Security Council announced, on Tuesday, that 10 members of IS organization, including the security official of the organization, were killed in an air strike of the international coalition aircraft, southwest of Kirkuk.
 
 The authority said in a statement that the aircraft of the International Coalition targeted, by air strike, a IS's car carring 10 elements on the road, "Riyadh - Hawija," southwest of Kirkuk. "The bombing resulted in the killing of all elements, including the security official in the organization, Ammar Hassan Mohammed Hassan, nicknamed Abu Nabil," the statement added.
 
 In the same context, a police source said, Wednesday, that an explosive device targeted a police patrol in Ibrahim bin Ali area, west of Baghdad, wounding three policemen.

In a related context, the organization failed to launch attacks within Arab countries, although hundreds of extremists who joined the organization, in Iraq, Syria and Libya, are descended from some of these countries. Mauritania dismantled, for the first time, a cell of four accused of links with IS in October 2014, but the extremist organization did not succeed in carrying out any attack on its territory.
 
Some Arab countries, such as Morocco, Bahrain, Qatar and the United Arab Emirates, prepared to confront IS ideology.