Short answers, pulled from the story.
According to Nikolay Lossky, the characteristic features of Russian philosophy are cosmism, sophiology, sobornost, metaphysics, religiosity, intuitionism, positivism, and realism.
Archimandrite Gabriel was the first historian of Russian philosophy. He traced its origins to the didactic "Teachings" of Vladimir Monomakh, rooting Russian philosophy in ancient Russian scribes.
The debate centered on the role of the church in the state and the legitimacy of church land holdings. Joseph Volotsky insisted heretics should be physically destroyed, while Nil Sorsky and Vassian Patrikeev argued for persuasion through words alone.
Berdyaev distinguished primary irrational freedom as arbitrariness, rational freedom as the fulfillment of moral duty, and freedom imbued with the love of God. He argued freedom was not created by God, so God cannot be held responsible for the evil that freedom produces.
Solovyov, who lived from 1853 to 1900, proposed positive total-unity headed by God, in which good is a manifestation of will, truth a manifestation of reason, and beauty a manifestation of feeling. He saw the human being as a connecting link between God and imperfect nature, with the task of bringing nature to perfection.
In connection with dramatic events in Russian history, Russian philosophy split into Russian Marxism and the philosophy of the Russian diaspora. Some philosophers were exiled abroad while others, including Pavel Florensky and Alexei Losev, remained in Soviet Russia.