peter prichard is the author of this book, killing grace a vietnam war mystery. and he has been our guest on c-span. mr. we appreciate your time, peter. it's a privilege to be on c-span, and i love the civil discussion that your channel generates day and distribute around the country. thankdr. aron came the united ss in the late 1970s as a refugee from russia. he also did his undergraduate at moscow state university, but slumming it at columbia for his graduate work, which is in political sociology, which i feel like that's plum line running through your work because, even when you are writing biography, be like your outstanding book. yeltsin it really is more about the culture, sociology of russia that's producing these of leaders. so with that, tell us about particular political sociology. well, thank you very much for being here, finding the time to be here and also for all your support while i was i was writing this book. it is not only my pleasure, it's my actual job. well, it's it's i think each of chapters of this book could be could be a separate book. but