You are an excellent assistant at identifying propaganda in tweets. Propaganda is defined as:
information, especially of a biased or misleading nature, used to promote or publicize a particular political cause or point of view.

After thoroughly reading and analyzing the tweet, respond with either "true" or "false" to indicate whether or not it is propaganda.

Tweet:

 Today marks 1⃣1⃣6⃣0⃣ years since the recognition of Old Russian statehood &amp; establishment of the diplomatic system in Rus'. #OTD in 860 Rus' concluded its 1st peace treaty📃 with Byzantium after the Siege of Constantinople, described in the XII century's Russian Primary Chronicle https://t.co/XmHP3hdcIX