MOSCOW -- Russian President Vladimir Putin on Tuesday strongly defended Moscow's military assistance to the Syrian government, saying it's impossible to defeat the Islamic State group without co-operating with Damascus.
Putin's statement comes amid the signs of an ongoing Russian military buildup in Syria, which the U.S. says signals Moscow's intention to set up an air base there.
Speaking at a meeting of heads of states at a Moscow-dominated security alliance of ex-Soviet nations in Tajikistan, Putin urged other nations to follow Russia's example and offer military support to Syrian President Bashar Assad's government.
"We are supporting the government of Syria in the fight against a terrorist aggression, are offering and will continue to offer it necessary military-technical assistance," Putin said in televised remarks. "Without an active participation of the Syrian authorities and the military, it would be impossible to expel the terrorists from that country and the region as a whole, and to protect the multi-ethnic and multi-confessional Syrian people from destruction."
He said that Assad was ready to conduct political transformations and engage a "healthy part of the opposition," but added that "pooling forces in the fight against terror takes the priority now."
The signs of a Russian military buildup in Syria have worried Washington, which sees Assad as the cause of the Syrian crisis and has warned Moscow against trying to shore up his regime.
In an interview with Russian media, excerpts of which were carried Tuesday, Assad reaffirmed his longtime claim that it's necessary to uproot "terrorism" before discussing political reforms.
"We must continue a dialogue for the sake of reaching consensus," he said, according to Russian news agencies. "But it's impossible to achieve real success as long as bloodshed continues and people don't feel secure. We won't achieve anything until we defeat terrorism in Syria."
He also urged Europeans to stop supporting "terrorists" to stem a flow of refugees from Syria.
Russia has staunchly backed up Assad throughout Syria's devastating civil war that has killed about 250,000 people and turned millions into refugees, shielding him from United Nations sanctions and continuing to provide him with weapons despite Western criticism.
Putin shrugged off allegations that Moscow's support for Assad has sparked a flow of refugees, saying that without Russia's support for Assad's regime the number of Syrian refugees heading to Europe would have been even bigger.
"People are fleeing Syria primarily to escape fighting that has been fueled from the outside with supplies of weapons and hardware, they are fleeing to escape terrorist atrocities," he said. "Without Russia's support for Syria, the situation in the country would have been worse than in Libya, and the flow of refugees would have been even bigger."
The Pentagon says that Russia is in the midst of a steady military buildup at an airport in Syria's coastal province of Latakia, indicating Moscow intends to create a forward air operations base there, although no fighter jets or helicopters have arrived yet.
As part of the effort, Russia has delivered about a half dozen battle tanks to the air base in recent days, a U.S. official said Tuesday. The official wasn't authorized to discuss details of Russia's buildup and so spoke on condition of anonymity.
Asked earlier this month if Russian troops could join the fight against IS, Putin seemed to keep the door open for that, saying that "we are looking at various options."
The Russian leader is set to address the Syrian crisis when he speaks to the UN General Assembly later this month, and observers in Moscow believe he wants a Russian military force on the ground to be ready by that time.
National Security Writer Robert Burns in Washington contributed to this report
