Internet reports that while Russia remains firmly committed to advancing its military operations, the Kremlin is weighing concessions to U.S. President Trump, which could include reaching an air ceasefire with Ukraine in an attempt to avoid secondary sanctions. People familiar with the matter said that although there are low expectations for a successful agreement, U.S. Special Envoy for the Middle East Witkov's visit to Russia this week is regarded by Russia as one of its last opportunities to reach an agreement with Trump. One of the people familiar with the matter said a moratorium on air strikes, including drones and missiles, could be a potential de-escalation proposal, provided that Ukraine also participates in the signing. However, Russian President Vladimir Putin will not agree to a comprehensive ceasefire agreement in Ukraine because the Russian army is still advancing steadily on the battlefield and Russia's goals have not changed.