An alliance of nationalist and leftist parties called on the government to reject the Washington-led anti-ISIL coalition on Saturday, a day after President Barack Obama said the US is assembling a broad international coalition with the goal to "snuff out" ISIL terrorists from Syria and Iraq.

The leaders of the parties said that Jordan should combat Takfiri violence through its own political, cultural, intellectual and economic means.

They said the planned US intervention in the Middle East is a colonial scheme to inflame sectarianism and terrorism in the region.

The ISIL militants, who were initially trained by the CIA in Jordan in 2012 to destabilize the Syrian government, control large parts of Syria's northern territory. ISIL sent its fighters into Iraq in June, quickly seizing large swaths of land straddling the border between the two countries.

Last week, ministers from the United States, the United Kingdom, France, Germany, Canada, Australia, Turkey, Italy, Poland and Denmark met at a NATO summit in Wales to hammer out a strategy for battling ISIL.

Obama also attended the NATO summit and later this month will hold a leaders security conference at the UN General Assembly in New York, aimed at seeking support from countries willing to join the coalition.

According to the White House, the terrorist group recently beheaded American journalists James Foley and Steven Sotloff in Syria. Foley was reportedly killed last month, and Sotloff was executed early this month.

Former US intelligence official Scott Rickard says Washington is using the “beheadings” of the “journalists” by ISIL to "sway public opinion" in favor of another war in the Middle East.