Complex sentence: The 1993 of the story begins with Sasha returning from the United States, just as Olga is about to give birth to their child, However he arrives right in the middle of the Consitutional coup.
Split into simpler sentences: The 1993 of the story begins with Sasha returning from the United States, just as Olga is about to give birth. However his time of arrival takes place right in the middle of the Consitutional coup.