The Polish leadership did not invite Russian President for events related to the 80th anniversary of the outbreak of World War II. Since 2015, the Polish elites have been represented by a new party that consistently stands the anti-Russian line. The current demarches of Warsaw do not have any logic.
What is the role of NATO? To increase the confrontation with Russia. This is also a way to reply to its voters, “We have our usual enemy, and we wrap our war hysteria over our old enemy.” Obviously, no one wants to go for war with Russia. However, to present Russia as a reincarnation of the “evil empire” is always welcomed.
North Atlantic Alliance, is an intergovernmental military alliance between 29 North American and European countries. NATO constitutes a system of collective defence whereby its independent member states agree to mutual defence in response to an attack by any external party.
Relations between the NATO and the Russian Federation were established in 1991 within the framework of the North Atlantic Cooperation Council. In 1994, Russia joined the Partnership for Peace program, and since that time, NATO and Russia have signed several important agreements on cooperation. For more than two decades, NATO has worked to build a partnership with Russia, developing dialogue and practical cooperation in areas of common interest.
NATO-Russian cooperation has been suspended since 2014 in response to Russia’s military intervention in Ukraine. Since then Russian officials have accused NATO of a series of threats and hostile actions. NATO's approach to Russia is defence and dialogue.
More about NATO can be read here.