I guess, I mean are they ALL doing it at same time as some kind of statement? Or it's just one country among them?
Latter could just be coincidental....but also begs the question given size of Cyprus and the Turkic CARs for sure that had Moscow route "good enough" till now....past whatever the "honorary consulates" handle. Not too familiar with this stuff.
Last time I looked into it was weird way US does it with Taiwan, by basically never having an ambassador per se (after recognition switch to PRC), but a charge d'affairs (i.e Taiwan treated regionally). "Charge d'affairs" are who also take over (like a deputy) when ambassadors are recalled, reassigned or during replacement time etc.
Last bit of trivia I know (though might be wrong) is that embassy actually refers to the diplomat corps themselves within the country. The building itself is just the "chancellory" iirc. Same for consulates (when you open more than one embassy)
Not all three at the same time, in a ceremonial fashion of course but days apart because that would be salt on the wound.
Like you said, bilateral relations can easily be established between any country with “creative” diplomatic titles or even under good offices of a third country if the political climate wouldn’t allow it.
However, what bothers most Turkish members is that this was an unexpected move by their brethren and they see it as a blow to Turkish foreign policy and also take it as an insult.
Like I said, it's almost officially recognizing Southern Cyprus as the sole representative of the island thus sending the Republic of Northern Cyprus to the trash bin.
An embassy is really on a different level. It can initiate any kind of diplomatic mission, act, even sign treaties which bind its country whereas consulates deal with consular stuff with limited diplomatic missions.
Attaché cadres are the suspicious ones though. During the Cold War Soviet embassies were filled with agricultural attaches who were KGB guys while CIA guys served as trade attaches in American embassies
