Swiss authorities in Zurich put Vladislav Klyushin, a Russian businessman widely noted for his Kremlin ties, on a flight bound for the U.S. on Saturday, ending a months-long extradition fight that cast a pall over this summer’s Putin-Biden talks in Geneva. Swiss reporters first confirmed Klyushin’s extradition Saturday night; the U.S. Justice Department on Monday said the 41-year-old, a top official at Moscow-based IT firm called M-13, would stand trial on charges of insider trading, citing information allegedly “stolen from U.S. computer networks,” netting “tens of millions of dollars in illegal profits.” The charges carry potentially decades’ worth of prison...