REUTERS, New York

The US dollar reached a new 20-year high on Monday as risk-off sentiment stemming in part from concerns over the Federal Reserve’s ability to combat high inflation boosted the greenback’s safe-haven appeal.

The dollar has risen for five straight weeks as US Treasury yields have climbed on expectations the Fed will be aggressive in attempting to tamp down inflation.

On Monday, Minneapolis Fed President Neel Kashkari said the US central bank may not get as much aid from easing supply chains as it is hoping for in helping to cool inflation. Atlanta Fed President Raphael Bostic said he already sees signs of peaking supply pressures and that should give the Fed room to hike at half-percentage-point interest rate increments for the next two to three policy meetings, but nothing bigger.