US President Joe Biden warned Europe about trouble in the Balkans if Russia wins in Ukraine.

If we leave and Russia is able to continue the attack and collapse Ukraine, what do you think will happen in the Balkan countries? It changes the dynamic, Biden said.

It’s one of his latest talking points as he tries to get Congress to support continuing the military and financial support to Ukraine, which failed to advance during the summer and now faces growing Russian attacks.

The US has traditionally stood by the Albanians in the Balkans, while Russia supports Orthodox Slavic countries, primarily Serbia.