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At the chokepoint entering South Lake Union, crews will widen Fairview Avenue North to build a bus bypass lane at Valley Street traffic lights.

Drought created chokepoints last year on the Mississippi River and the Rhine in Europe.

Several shipping companies said they will suspend travel through the Bab al-Mandab Strait, a chokepoint that links the Gulf of Aden to the Red Sea, until security there improves.

It was the latest incident in a series of attacks on commercial vessels passing through the crucial Bab el-Mandeb chokepoint in the Red Sea, U.S. military officials said Tuesday.

To do that, the Stanford sanctions group says countries should demand proof of Western insurance before letting vessels pass chokepoints — now only recommended by the U.S.