Iranian Parliament Speaker Ali Larijani said on Wednesday that the US-led coalition against the ISIL terrorist group is politically-tainted and is aimed at enhancing Washington's influence in the Middle-East.

The top Iranian diplomat underscored that Washington plans to increase its influence in Iraq and bring to power its protégé elements in Syria under the pretext of fighting terrorism.

Last week, Secretary of Iran's Expediency Council (EC) Mohsen Rezayee underlined that the US is showing off with its so-called fight against terrorism in the region and its airstrikes on the ISIL terrorist group in Iraq are aimed at securing Washington's own interests in the Middle-East.

"We suspect the US intentions, the coalition and its formation," Rezayee told reporters last Wednesday.

After the so-called US-led coalition against the ISIL declared its creation, Iran lashed out at the western states for pursuing a double-standard policy towards campaign against terrorism in various countries.