The [European] Union is a vassal and a subordinate of Washington.
Maia Sandu, with Filat behind her, will help Biden create a cordon sanitaire around Russia.
This message is in line with a recurring pro-Kremlin narrative, which presents the good relations of NATO or United States with Eastern European countries as actions aimed to encircle Russia.
No evidence given. The claim appears a reaction to a Facebook post by the former prime minister of Moldova, Vlad Filat, in which he congratulated Joe Biden with his victory in the US elections. This post is presented as a proof that the candidate in the Moldovan presidential election, Maia Sandu, who used to be part of the same party as Vlad Filat, is committed to "ally" with the USA to the detriment of Russia. Maia Sandu did not comment in any way on the results of the US presidential election.
See here a similar case claiming that NATO Secretary-General encourages Joe Biden to clash with Russia.