Most airpower experts maintain that one of the key advantages unmanned aviation has over its manned counterpart is cost (in financial and human terms), and this is arguably one reason behind the almost-exclusive use of the UAVs in the second Nagorno-Karabakh war. To illustrate, the ubiquitous Turkish-made TB2 unmanned combat aerial vehicle (UCAV) that has featured in various propaganda videos released by Baku costs about US$5 million each.