The Globe and Mail reports in its Tuesday edition that oil prices extended gains toward their largest ever monthly increase on Monday, as major Wall Street indexes were mixed in choppy trade and investors focused on the war on Iran that they fear will drive inflation and possibly recession. A Reuters dispatch to The Globe says that Canada's main index ended flat after trading positively earlier in the session. U.S. and Canadian government bond yields declined across the curve as mounting global growth concerns eclipsed inflation worries. Investors are increasingly uneasy about a war entering its fifth week with no clear goals or path to resolution. Mr. Trump said the U.S. was in serious discussions with a "more reasonable regime" to end the war that has widened since it began a month ago. But he repeated his warning to Iran to open the Strait of Hormuz or risk U.S. attacks on Iranian oil wells and power plants. Federal Reserve Chair Jerome Powell said the U.S. central bank can wait to see how the Iran war affects the economy and inflation, noting policy-makers typically look through shocks such as those from higher oil prices. Brent crude settled at $112.78 (U.S.) a barrel, while U.S. crude closed up at $102.88 (U.S).