oligarchs. the senl ior official saying if putin were to change course some of the sanctions could be reversed but not all of them are permanent. when we see from our very own colleagues on the ground reporting on some of the things going on in ukraine, you have to acknowledge the idea of putin drastically changing course, on many days that seems like a faraway possibility. mj lee at the white house, thank you very much. today the white house secretary of state antony blinken in brussels for an important nato meeting. nato secretary-general says weeks of battlefield losses have not have not changed vladimir putin s calculus. we have seen no indication president putin has changed his ambition to control the whole of ukraine but at the same time we have to be realistic and realize this may last for a long time, for many months or even years. to brussels and nic robertson.