Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Trump 'Substantially' Increases Iran Sanctions, Blaming Tehran for Saudi Oil Field Attacks VOA News Pentagon Correspondent Carla Babb, National Security Correspondent Jeff Seldin and Katherine Ahn of VOA's Persian Service contributed to this report. U.S. President Donald Trump said Wednesday he is "substantially" increasing economic sanctions against Iran in the wake of last weekend's missile and drone attacks on Saudi Arabia's oil fields that Washington says were launched by Tehran. Trump, on Twitter, said he had directed Treasury Secretary Steven Mnuchin to stiffen existing sanctions against Iran that American officials say have already hobbled its economy, but gave no details of the new penalties. I have just instructed the Secretary of the Treasury to substantially increase Sanctions on the country of Iran! -- Donald J. Trump (@realDonaldTrump) [1]September 18, 2019 Trump's order came as Secretary of State Mike Pompeo traveled Wednesday to Jeddah to meet with Saudi officials on how to respond to the attack that knocked out half of the Saudis' oil production, a hit that temporarily cut nearly 6% of the global oil supply. References 1. https://twitter.com/realDonaldTrump/status/1174305447513186304?ref_src=twsrc%5Etfw .