Russia Threatens Harsh Response After Poland Seizes Russian Embassy School in Warsaw

According to multiple reports, Poland has seized control of a Russian embassy school in Warsaw, claiming the building belongs to Poland, not Russia.
Russia has condemned Poland's actions as hostile and illegal, and promised a forceful response.
Relations between the two countries have already been strained by their opposing positions on the war in Ukraine.
Poland supports Ukraine and has provided aid, while Russia backs pro-Russian separatists in eastern Ukraine.
Russia's former president Dmitry Medvedev attacked Polish "rats" over the embassy school dispute and suggested ruthless action against Polish forces in Ukraine.