U.S. special envoy Steve Witkoff was scheduled to meet Russian President Vladimir Putin in Moscow on Tuesday, bringing with him a preliminary peace proposal that Washington hopes could help end the nearly four-year-long conflict in Ukraine. As Witkoff traveled to Moscow, Ukrainian President Volodymyr Zelenskyy continued his European diplomatic tour, arriving in Ireland to thank and engage with nations that have supported Ukraine throughout the war with Russia. After months of struggling to make