U.S. to Share Nuclear Submarine Technology With Australia in New Pact

WASHINGTON—The U.S., the United Kingdom and Australia are creating a new security partnership in the Indo-Pacific, building on the longstanding alliance between the three to share intelligence, deepen cooperation and help Australia to build nuclear-powered submarine capabilities as China’s influence grows.

The new agreement, announced Wednesday by leaders of the three countries, was described by administration officials as a way to line up common interests in the Asia Pacific.