MOSCOW (Reuters) - Russian Foreign Minister Sergei Lavrov said on Monday that the Russian-backed Syrian government offensive in Idlib did not violate any agreements with Turkey, the RIA news agency reported.

Turkish President Tayyip Erdogan told his Russian counterpart Vladimir Putin on Friday that Syrian army attacks in northwest Syria were causing a humanitarian crisis and threatening Turkey’s national security, the Turkish presidency said.

Syrian troops have encircled rebels and a Turkish military post in northwest Syria in an offensive to reclaim territory and towns they lost early in the war.

Reporting by Maria Kiselyova; writing by Tom Balmforth; editing by Andrew Heavens