Doonbeg, Sept. 13 -- US President Donald Trump on Sunday urged Ukrainian President Volodymyr Zelenskyy to halt strikes targeting Russian oil refineries and diesel infrastructure, warning that the ongoing attacks were exacerbating a worldwide supply crunch.

The appeal followed a milestone on Friday, when average diesel prices across the United States surpassed USD 6 per gallon, establishing a record high. High fuel costs continue to weigh heavily on American voters ahead of the congressional mid-term elections scheduled for November.

For months, Ukraine has targeted Russia's energy sector with long-range drone strikes, maintaining that the industry finances and fuels Moscow's military campaign. Simultaneously, Russia has intensified aeri...