Farmers face mounting financial strain as diesel prices rise amid war

American homes and businesses are feeling the ripple effects of the war in Iran. Gas prices are averaging $3.97 a gallon nationwide, up about one dollar in a month, and the largest four-year increase in 30 years. Lana Zak reports from Iowa. "CBS Evening News" delivers the day's most important stories, delivering context and depth to bring greater understanding to your world. Check local listings for "CBS Evening News" broadcast times. Subscribe to the "CBS Evening News" YouTube channel: https://youtube.com/CBSEveningNews Watch full episodes of "CBS Evening News": https://cbsnews.com/evening-news/full-episodes/ Follow "CBS Evening News" on Instagram: https://instagram.com/cbseveningnews/ Like "CBS Evening News" on Facebook: https://facebook.com/CBSEveningNews Follow "CBS Evening News" on X: https://twitter.com/CBSEveningNews Download the CBS News app: https://cbsnews.com/mobile/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: licensing@veritone.com