MOSCOW, Sept 14 (Reuters) - Russian President Vladimir Putin received his Syrian counterpart Bashar al-Assad on Monday for the first time since 2018 and criticised foreign forces that are in Syria without permission or a U.N. mandate - a rebuke of the United States and Turkey.
Putin is Assad's most powerful ally in the decade-long Syrian conflict; his deployment of Russia's air force in 2015 helped to turn the tide in Assad's favour, allowing him recover most of the territory lost to insurgents.
However, Turkish forces are now present in much of the north and northwest, helping to shore up the last major bastion of anti-Assad rebels, and U.S. forces are supporting Kurdish-led militias who control parts of the east and northeast.
Assad, who has also been assisted by Iran during the conflict, has made few trips abroad since the war began in 2011.
Putin told him the main problem in Syria was the presence of foreign forces without permission or a U.N. mandate, "which clearly runs counter to international law", the Kremlin said on Tuesday.
This "undermines your ability to use your best efforts to consolidate the country and promote recovery at a pace that would have been possible if the legitimate government controlled the entire country".
The Syrian state views the U.S. and Turkish forces as occupiers, while Russian forces and Iranian-backed militias are there at the government's invitation.
"Terrorists sustained very serious damage, and the Syrian government, headed by you, controls 90% of the territories," Putin said, according to the Kremlin.
However, according to other assessments, he holds less than this. Issuing its latest report on Syria on Tuesday, the U.N. Commission of Inquiry put the portion under Assad's control at just 70%.
Its latest report documented increased violence, fighting and rights violations in the year to the end of June, including arbitrary detention by government forces. It said Syria was unsafe for refugees to return to. read more
The meeting with Assad on Monday was Putin's last public engagement before he announced on Tuesday that he was self-isolating as a precaution after several members of his entourage fell ill with COVID-19.
Assad and his wife both recovered from COVID-19 earlier this year.
The Kremlin said Assad had thanked Putin for providing humanitarian aid and for his efforts to halt the "spread of terrorism".
He lauded what he called the success of Russian and Syrian armies in "liberating occupied territories".
Assad also said the sanctions imposed by some nations on Syria were "anti-human" and illegitimate.
The United States tightened sanctions against Syria last year, saying it wanted to force Assad to stop the war and agree to a political solution.
The Syrian state news agency SANA said the two leaders had discussed cooperation between their armies in "combating terrorism and completing the liberation of the land that is still under the control of terrorist organisations".
Our Standards: The Thomson Reuters Trust Principles.