This is a very watchable documentary series with a good range of interviews and some balance in showing the difficulties of taking a moral approach vrs realpolitik.
As someone who has deep knowledge of the Bosnian and Kosovo conflicts, I should caution people that the documentary vastly oversimplifies these conflicts. In particular there is a general categorisation of the participants as being either good (eg Bosnian Muslims) or bad (Serbs) when the reality was much much more complex (there were many factions in the conflict and external forces eg the forerunners of Al-Quaeda were also fighting with some of the Bosnian Muslims).
The role of other countries is also largely ignored. Little is said about the contact group of US, UK, France, Germany, Italy and Russia. The role of NATO and the importance of multilateralism is not mentioned at all. Instead we are left with the view that only the U. S. can police the world.
On the Kosovo conflict the role of Blair in persuading Clinton to get involved is completely ignored aside from a vague reference to a conversation where Clinton talks about Yeltsin's vulnerability. Little is made of the fact that the Kosovo bombing campaign was started without a plan B in case that failed (google the B minus option). This was much an omen for the future. The incident at Pristina airport where Wes Clark tried to order the British NATO troops to retake the airport from the Russians is also missed out (this led to Wes Clark's removal as being a madman ready to risk WWIII).
I'm less versed on the other conflicts but would imagine a similar simplification is involved.
I also observed that nothing is said of the many other conflicts where the U. S. chose not to get involved is missed out. The challenge for any foreign policy is that there are many bad people in countries across the world and it's not possible to intervene in all.
In sum, well worth a watch but do some reading of other sources outside the documentary or you will end up with a partial view where the message seems to be that intervention to stop genocide is a must and can be done.
A final comment is that the title sequence seems to be a rip off of the one for "The Crown".
