 Soviet sources have claimed that soon after the pact was signed, both Britain and the US showed understanding that the buffer zone was necessary to keep Hitler from advancing for some time and accepted the ostensible strategic reasoning; however, soon after World War II ended, those countries changed their view.Many Polish newspapers published numerous articles claiming that Russia must apologise to Poland for the pact.Two weeks after Soviet armies had entered the Baltic states, Berlin requested Finland to permit the transit of German troops, and five weeks later Hitler issued a secret directive "to take up the Russian problem, to think about war preparations," a war whose objective would include establishment of a Baltic confederation.