It's a really challenging time for Treasury markets: JP Morgan's Alex Roever

Alan Ruskin, Deutsche Bank AG chief international strategist, and Alex Roever, head of JP Morgan's U.S. interest rate strategy, join "Squawk Alley" to discuss the market sell-off and China's devaluation of the yuan.

Squawk Alley,CNBC,business news,finance stock,stock market,news channel,news station,breaking news,us news,world news,cable,cable news,finance news,money,money tips,