CNN 10: The big stories of the day, explained in 10 minutes

Today CNN 10 is looking at the U.S. promise to send $350 million dollars in weapons and equipment to Ukraine. And CNN visited Fort Sill in Oklahoma where the U.S. is instructing top Ukrainians on weapons systems. Then, CNN 10 is looking at research at Columbia University that's creating the perfect cheesecake...with 3D printing. And Jeanne Moos has a story involving two dogs and one epic prank. All that and more on this episode of CNN 10.