Moscow welcomed on Friday Turkish President Recep Tayyip Erdogan's proposal to establish a three-way mechanism for diplomacy between Türkiye, Russia and Syria, Russian state news agencies reported, citing a deputy foreign minister.  Mikhail Bogdanov said Moscow received Erdogan’s proposal "very positively."  The RIA Novosti news agency also reported that Syria's position on the idea - which could involve a summit between the leaders of the three countries - was not yet known, but that Moscow was in contact with officials in Damascus.   "We are communication with our Syrian friends," Bogdanov said.  Erdogan was quoted on Thursday as saying he proposed to his Russian counterpart Vladimir Putin forming a trilateral mechanism with Russia and Syria to accelerate diplomacy between Ankara and Damascus.  Broadcaster Haberturk cited Erdogan as telling reporters after a trip to Turkmenistan that he offered to Putin initiating a series of meetings between Türkiye, Russia and Syria to revisit long-strained relations with Damascus.  "First our intelligence agencies, then defense ministers, and then foreign ministers (of the three countries) could meet. After their meetings we as the leaders may come together. I offered it to Mr. Putin and he has a positive view on it," Erdogan was cited as saying.