Morning news brief

Treasury secretary to detail new round of economic pressure on Iran, Iran warns of 'seismic' retaliation if U.S. follow through with economic threat, Canada vows to impose retaliatory tariffs on U.S.

<p>Treasury secretary to detail new round of economic pressure on Iran, Iran warns of 'seismic' retaliation if U.S. follow through with economic threat, Canada vows to impose retaliatory tariffs on U.S.</p><img src='https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5939834' />