In the following article, http://www.thehindu.com/opinion/editorial/ominous-retreat/article19259175.ece/amp/
It is written that Bond markets around the globe showed signs of weakness. Yield on German government bonds reached their highest level in 18 months, while that on the 10-year U.S. Treasury bonds reached its highest level in eight weeks.
According to me, when rate of return of bonds drop, then demand for them drops, and hence bond market becomes weak. But here when yield on bonds increase, bond markets weaken is written.
I am unable to conceptualize this. Please clear this doubt.