Serbia is irrelevant.
My opinion.
You are limited but let me still inform you.
Serbia mean warm seas for Visegrad. And historically, no strong Poland when Racowie were weak. Strong Serbia, strong and safe Poland. With Serbia active, no chance of Vatican-Germany-Russia`s deal against Poland.
Now >>> BRAKING NEWS
Some says that Orban and Vucic agreed to install
Automatic Gatling machine gun turets on Serbian southern border where is main route of invading migrants. All who choose to cross border illegally (out of official sites) crossing on its own risk, I mean on its own definite suicide.
!!! Extraordinary emergency situation is declared in Serbia less then hour ago, because of Corona and migrants. Quite possible that Serbian and Hungarian army already performing combined deploying. I sow increased number of police and army vehicles on streets.

[b]Automatic Gatling machine gun turets[/b
Turkish vampire Erdogan will have that blood on his hands, if dare to release full migrant invasion.