What do you think is the most important overall measure of the performance of bond markets?

Which fixed-income investment strategies, (out of the many fixed-income fixed-income investment strategies out there) would you give as advice to fixed income investors in the face of the bond market decline described in this article? [This requires you to identify, give a brief description of each, and then justify your pick]

Give a balanced argument on whether diversifications the antidote in the face of a bond market crisis such as this?