"Khaled Mashal Hails Iran’s Drive to Help Resolve Syrian Crisis" (Fars News)

This actually ends by referring to "the consequences of arming militant groups":

Palestinian Resistance Movement Hamas Political Bureau Chief Khaled Mashal in a meeting with Iranian Deputy Foreign Minister Hossein Amir Abdollahian in the Qatari capital of Doha praised Tehran's commitment to the political solution of the Syrian crisis.

"Iran’s role in the resolution of the three-year-long crisis in Syria has been constructive," Mashal said during the meeting.

Mashal pointed to Israel’s negative role in Syria and its policy of exploiting the developments in the Middle East to its own advantage, and said, "The crisis in Syria can only be resolved through political means."

He called on the regional countries to play a more effective role in resolving the Syrian crisis.

On Wednesday,Iranian President Hassan Rouhani in a meeting with UN Secretary General Ban Ki-moon in Beijing voiced his concern over the ongoing Syrian crisis, and called for collective efforts to resolve the country's problems.

"The Islamic Republic of Iran has always felt concerns over the regional issues, specially the Syrian issue," President Rouhani said during the meeting on the sidelines of the Fourth Summit of the Conference on Interaction and Confidence Building Measures in Asia (CICA) in the Chinese capital.

Syria has been gripped by deadly violence since 2011. The so-called Syrian Observatory for Human Rights has put the death toll from the foreign-backed militancy against the government of Syrian President Bashar al-Assad at more than 160,000.

Western powers and their regional allies -- specially Qatar, Saudi Arabia and Turkey -- are supporting the militants operating inside Syria.

As the foreign-backed insurgency in Syria continues without an end in sight, the US government has boosted its political and military support to Takfiri extremists.

Washington has remained indifferent to warnings by Russia and other world powers about the consequences of arming militant groups.