Missile shot into Poland turns out to be Ukrainian defense missile

Yesterday a missile hit the country of Poland. It was first reported the missile came from Russia, but then hours later it was determined to be a defense missile aimed at blowing up Russian missiles being shot into Ukraine. Russia had maintained they did not shoot a missile that could reach Poland. Well then this morning and afternoon it was determined in fact that the defense missile was shot by Ukraine and it somehow reached Poland but their was a lot of debate on was it a Russian missile which would have or could have started a war between NATO and Russia. Fortunately, cooler heads won out and but the matter to bed. But these kinds of mistakes can cause a world War and it is rather lame for Russia to be causing all this over land. Russia already has been using Crimea as a port for resupplying their ships in the Black Sea.