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: US Will 'Substantially' Increase Iran Sanctions Ken Bredemeier WASHINGTON - Story updated July 10, 2019, 3:05 p.m. President Donald Trump said Wednesday he would soon "substantially" increase economic sanctions against Iran, even as the U.S. accused Tehran of "nuclear extortion" by breaching the 2015 international pact aimed at curtailing its nuclear weapons development. Iran has acknowledged it is now enriching uranium beyond the limits of the accord Trump withdrew from last year and keeping a bigger stockpile than it was allowed. .