. a very good day to all of you, i m alex witt in for chris jansing. the supreme court strikes down a trump era ban on bump stock, the devices that allow rifles to fire faster, almost like a machine gun. the heated reaction coming into the decision. also breaking a major health update on the princess of wales, what we re now learning about her treatment and plans for a major public appearance tomorrow. plus, peace, according to vladimir putin. the russian president lays out his terms for a cease fire, more than two years into his gruesome war in a ukraine. what reception is that getting in kyiv. and did donald trump just empathize with joe biden? his surprising comments about being a father and having to deal with hunter biden s conviction. our nbc news reporters are following the latest developments for us. we re going to begin with nbc s julia ainsley who joins us from outside the supreme court. julia, welcome. so break down this major decision on the rapid fire gun a