U.S. President Donald Trump on Wednesday said his special envoy Steve Witkoff had made "great progress" in his meeting with Russian President Vladimir Putin, as Washington continued its preparations to impose secondary sanctions on Friday. Trump, in a post on Truth Social, said he had briefed some European allies about Witkoff's meeting with Putin, which was focused on ending the 3-1/2-year war that began with Russia's full-scale invasion of Ukraine in February 2022. "Everyone agrees this War must come to a close, and we will work towards that in the days and weeks to come," Trump added, without providing further...