Julia Chatterley is live from the New York Stock Exchange. Here are the top business stories of the day. Fiat walks - the automaker abandons its tie-up with Renault, blaming the French government . Step up! U.S. President demands more progress from Mexico and warns China again too...and remembering our heroes, a tribute to all those who fought for freedom in Normandy 75 years ago. It's Thursday...let's make a move.To learn more about how CNN protects listener privacy, visit cnn.com/privacy