There is a joke about a Polish soldier who finds an old bottle on the banks of the Vistula. When he opens it, surew enough out pops a genie wqho grants the Pole the traditional three wishes.
"For my first wish," says the Pole "I would like the Chinese Army to invade Poland".
Months later, the invasion over the genie returns to grant the sencod wish
"For my secondwish," says the Pole "I would like the Chinese Army to invade Poland.
Months later, the invasion over the genie returns to grant the third wish
"For my third wish," says the Pole "I would like the Chinese Army to invade Poland.
By this time the genie is curious and asks why the Pole keeps asking for the same thing each time, thus wasting his wishes.
"But don't you see," says the Pole " For the Chinese army to ivade Poland three times they must pass through Russia six times!"