this. that's why it raises questions of how are they going to stop him from doing that and deter him from doing that. for now they say they are trying to punish him with the sanctions they imposed today. >> we're tracking our breaking news, cnn reporters hearing low-flying jets and what sound like air strikes in the distance in southern ukraine. we'll go live there next. cnn is also there as russian rockets fly overhead into ukraine. our reporter is live just over the russia border. plus, why might vladimir putin strike next? we'll talk to the chairman of the senate armed services comm committee. stay with us. mamany more cities and up to 10 times the speed at no o extra cost, the downloads are flying fast! verizon is going u ultra, so yor business can too.