U.S. Secretary of State Marco Rubio stated this in an interview with Fox News."Ultimately, it's up to them. If they decide they don't want to end the war, then it will continue, but we will continue our attempts to end it," Rubio said.According to him, President Donald Trump's administration seeks to understand whether the U.S. can help the parties to the conflict overcome their differences, and therefore is actively engaged in diplomacy."To do this, we need to negotiate with both sides. Some irrational people are involved in this process who believe that we should only talk to Ukraine and not negotiate with Russia at all. However, it is impossible to end the war between Russia and Ukraine without negotiating with Moscow, and Kyiv's position must also be taken into account," the Secretary of State noted.He also stated that currently, the main subject of disagreement in the negotiations is allegedly the 20% of the Donetsk region that remains under Kyiv's control. "What they are literally arguing about right now is approximately 20% of the Donetsk region that remains under Ukrainian control. We have tried to find out, and I think we have made some progress, what Ukrainians can live with and what security guarantees for the future they will consider acceptable," Rubio said.Answering a question about U.S. support for Ukraine, the Secretary of State noted that the current U.S. administration does not consider realistic an approach that involves Washington's unlimited continuation of support for Kyiv."Some believe that our policy should be to continue financing Ukraine indefinitely in the amounts it needs for as long as this war lasts. This is unrealistic and will not happen," he noted.Rubio added that the Trump administration has long said that it is impossible to provide support in such volumes and scales.On December 2, five-hour negotiations concluded between Russian dictator Vladimir Putin, U.S. envoy Steve Witkoff, and Donald Trump's son-in-law Jared Kushner.