Akhil Mittal, Senior Fund Manager at Tata Asset Management, believes that buying US bonds with elevated interest rates is a good long-term investment. He expects central banks worldwide to push rates higher, resulting in elevated rates for a longer period of time. Mittal suggests looking at long-term durations for investing in US bonds, as shorter durations may lead to reinvestment risks. He advises diversifying 10-20% of a fixed income portfolio into US bonds, with a focus on medium to long durations.