of thousands of troops on the border with ukraine, prompting invasion fears. the africa cup of nations continues in cameroon, where nigeria havejust scored a goal against sudan, following a 1 0 victory against egypt in their first match. later, egypt, who have won the cup of nations a record seven times, will have a chance to get back on track with a win against guinea bissau. i m joined now by the bbc s ian williams who is in yaounde. a last minute change of coach for nigeria ahead of this tournament, a risk that s paying off? not ideal preparation getting rid of your manager withjust not ideal preparation getting rid of your manager with just weeks before a major tournament but it seems to