US Marines have arrived in the Middle East amid rising tensions between Iran and Turkey, according to NPR's Emily Feng.

U.S. marines have arrived in the Middle East. NPR's Emily Feng has been monitoring the latest developments from the border of Iran and Turkey. <p>U.S. marines have arrived in the Middle East. NPR's Emily Feng has been monitoring the latest developments from the border of Iran and Turkey.</p><img src="https://media.npr.org/include/images/tracking/npr-rss-pixel.png?story=nx-s1-5763014" />