Dual Citizenship: if an athlete holds Citizenship of two (or more) Countries (or Territories), he may represent the Member of either (or any) of them, as he may elect. However, having once represented his elected Member in an International Competition under Rules 1.1(a), (b), (c), (f) or (g), he shall not represent another Member of which he is a Citizen for a period of three years from the date that he last represented the first elected Member. This period may be reduced or cancelled as set out below:
(i) the period may be reduced to 12 months with the agreement
of the Members concerned. The reduction shall be effective
upon receipt by the IAAF Office of a written notification
of the Members’ agreement....