Note: Photo 6 in the photo gallery of 7 have four portraits.
(a) The woman in the upper left portrait is Prime Minister Laimdota Straujuma of Latvia (the nation has a male president).
en.wikipedia.org/wiki/Laimdota_Straujuma
(b) The national flag for the upper right portrait is that of Ghana.
(c) In the left lower corner is the national flag of Nigeria.