CNN  —  US Secretary of State Marco Rubio said Friday that if it is not possible to end the war in Ukraine, the United States needs to abandon its efforts and move on. “If it is not possible to end the war in Ukraine, we need to move on,” he told reporters before departing Paris. “We need to determine very quickly now, and I’m talking about a matter of days, whether or not this is doable.” The comments come a day after he and special envoy Steve Witkoff met with European and Ukrainian allies as