Politics

Boeing’s Dispute With Bombardier Matters to Theresa May

As the U.K. prime minister visits Canada, her political friends in Northern Ireland want some help.

A Bombardier C-Series aircraft.

Photographer: Jasper Juinen/Bloomberg

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There are at least 10 reasons why a dispute between two airplane manufacturers in North America is reverberating across the Atlantic.

British Prime Minister Theresa May relies on that number of Democratic Unionist Party lawmakers from Northern Ireland to pass some key legislation after losing her parliamentary majority three months ago. So what matters to DUP leader Arlene Foster matters to May, and what matters most to Foster right now is Bombardier Inc., the biggest private employer in the U.K. province and the target of a trade complaint by larger rival Boeing Co.