Portugal may declare a civil order to ensure that truck drivers, who began a strike Aug. 12, deliver enough fuel to stop gas stations across the country from running dry at the height of the country’s tourism season, Prime Minister Antonio Costa said.

The United Steelworkers union representing 30,000 U.S. oil workers has reached a tentative deal on a new four-year contract offered by Royal Dutch Shell Plc on behalf of oil companies, a person familiar with the talks said.