"Since the expiry of the American ultimatum to the Soviet Union at noon yesterday, there have been intense diplomatic efforts to mediate between the two countries. There is still no information from Iran itself: no news teams have been allowed in or out of the country since phone and telex links were cut on Friday evening. Questioned in the House this morning, the Foreign Secretary said he had no definite news to report, and that it would be unhelpful to speculate in the absence of any hard information from the area."