by ahmedhadzi
Think about it in this way and all the ambiguity will go away:The action round of a phasing player starts AFTER the event was resolved in a case when a phasing player decides that event will preceed his OPs play. If the preceding event placed influence in a country, phasing player may use ops to expand from that country in the action round following the resolution of the event, since the influence was present there BEFORE the start of his/hers action round.
Playing the Iron Lady to place an inf Argentina and then to expand from it is a very common play.