An Iranian top parliamentarian says his country's cooperation with Russia, Syria and Iraq have proved "successful" in fighting terrorism in the region.

Alaeddin Boroujerdi, chairman of the National Security and Foreign Policy Committee of Iran's parliament, is due to meet Syrian officials in Damascus on Wednesday.

Arriving in Damascus late Tuesday, Boroujerdi said the U.S.-led anti-terrorism coalition has failed to achieve results, opening the way for a more successful intervention.

Moscow, which began its airstrikes in Syria on Sept. 30, said it is targeting Islamic State and other militant groups. But it has also struck positions of rebel groups supported by the West and other regional players.

The Russian intervention is supported by an intelligence-sharing center in Baghdad that coordinates the efforts of Russia, Iraq, Iran and Syria.