Mumbai, Oct. 23 -- The 10-year US Treasury yield fell below the critical 5% mark as a slide from two-decade highs extended. Debt market has been volatile recently and yields have eased despite elevated crude oil prices. The latest decline has emerged amid a sharp selloff in global equities. In fact, bond yields in other regions are staying elevated, leading to some demand for US bonds and effectively pulling yields lower in the US. French 10-year bond yields are at highest in around two and half decades on concerns over France's huge budget deficit. The US 10-year Treasury yield slipped around 20 basis points to point to 4.95% yesterday, marking the largest one-day yield decline in more than three-years. Us yields are currency at a five-w...