Treasury Secretary Janet Yellen responds to BlackRock CEO Larry Fink’s warning that the end of globalization is nigh. In a wide ranging interview, she weighs the concerns and the benefits of crypto assets, whether we need sanctions on China, and America’s slow journey toward renewable energy. CNBC’s Kayla Tausche reports on NATO’s deal to cut European reliance on Russian oil in Belgium. Plus, March Madness upsets continue, bitcoin is prompting action in the S&P, and Bed Bath & Beyond has struck a deal with activist investor Ryan Cohen.  In this episode:Janet Yellen, @SecYellenKayla Tausche, @kaylatauscheAndrew Ross Sorkin, @andrewrsorkinBecky Quick, @BeckyQuickJoe Kernen, @JoeSquawkKatie Kramer, @Kramer_Katie