The Kremlin said on Friday that some progress had already been made in talks about a possible peace settlement to end the war in Ukraine but that contacts were rather complicated with the United States. "Contacts are quite complicated, because, naturally, the topic is not an easy one," Kremlin spokesman Dmitry Peskov told reporters. U.S. President Donald Trump will walk away from trying to broker a Russia-Ukraine peace deal within days unless there are clear signs that a deal can be done, U.S. Secretary of State Marco Rubio said on Friday.