Even the safest corners of the market can start to look uneasy when oil jumps, war drags on, and investors begin to wonder whether inflation is heading back in the wrong direction.That was the message we got from Tuesday’s sale of 2-year US Treasuries. These are short-term government bonds, and they're widely watched because they reflect what investors think could happen over the next couple of years, especially with Federal Reserve interest rates.When demand for these short-duration Treasurys is strong, it tells us professional and institutional investors believe inflation...