WASHINGTON (AP) — The Trump administration on Friday imposed sanctions on more than 50 vessels, shipping companies and trade businesses in its latest bid to pressure North Korea over its nuclear program. The administration billed it as the largest installment of North Korean sanctions to date. While the number of companies from North Korea and other nations was high, the economic impact was likely to be less than previous measures that have targeted much larger financial and business networks in China and Russia that deal with the North. The United Nations Security Council has imposed three sets of sanctions on North Korea in the past year to deprive it of revenue and resources for its nuclear and ballistic missile development.Read more on NewsOK.com