The Guardian reported the information.Specifically, Tusk said that the importance of preserving Ukraine’s territorial integrity "is not just a matter of solidarity with our neighbour, but also of our own security."He noted that some of Putin’s territorial proposals seem "one-sided" and it's "difficult to see why it’s unacceptable" to Ukraine."The West, including European countries, will not accept Russian demands which simply amount to the seizure of Ukrainian territory… From history we know — and Poland has often been a victim of this — that when the great powers decided about other countries without the participation of those countries in negotiations, the consequences were grave," he said.At the same time, the Polish leader added that he has "lots of fears and lots of hope" regarding the Alaska summit, noting the "tactic … of unpredictability at times, when it comes to various moves and actions" of Trump.Trump earlier announced he would meet with Russian leader Vladimir Putin in Alaska on August 15.When asked what he would discuss with Putin regarding the conditions for ending Russia's war against Ukraine, Trump previously mentioned the topic of “some exchange of territories.”Diplomatic consultations between Ukraine and the U.S. are ongoing almost around the clock ahead of the summit.Meanwhile, the NYT reports that the U.S. Secret Service has booked a six-room house in Anchorage, where the meeting between Trump and Putin is likely to take place.Republican Senator Lindsey Graham stated that Ukraine and Russia will have to exchange some territories after Kyiv receives security guarantees.