Oil prices stagnated this week as traders confront bearish trends including rising US stockpiles and a rebound in demand that has not lived up to expectations. US crude inventories have grown by almost 24 million barrels in the past two weeks, adding to an already oversupplied market. Diesel prices also hit their lowest since pre-war levels as inventories rise and Russia finds ways to export significant amounts of the fuel, said Dennis Kissler, senior vice president of trading at BOK Financia ....