Socialist countries tended to have very professional diplomatic corps, and in the countries where those weren't purged in 90's* this more or less keeps up.
*idk about Russia but for example surprisingly Poland, while having the shittiest possible Foreign ministry personnel being the prize for least competent party bonzos and their bootlicks, did not purged the professional diplomatic service and even 35 years later they are doing very good job at least until ministry failures cut in (like in case of that fuckup with Iran conference).
Socialist countries tended to have very professional diplomatic corps, and in the countries where those weren't purged in 90's* this more or less keeps up.
*idk about Russia but for example surprisingly Poland, while having the shittiest possible Foreign ministry personnel being the prize for least competent party bonzos and their bootlicks, did not purged the professional diplomatic service and even 35 years later they are doing very good job at least until ministry failures cut in (like in case of that fuckup with Iran conference).