International presence is not welcome. >> well, authorities here in crimea say they will consider international observers for the referendum being staged here on autonomy next weekend. but only if those international observers are from russia, wolf. >> matthew chance with that exclusive report. thank you very, very much. joining us now is the united states ambassador, the group of these international observers you just saw trying to get into crimea. daniel behr is joining us. ambassador, the russians say that this group, these group of observers lack what they call official invitations to come...