Sweden said Saturday it will step up insurance checks on foreign ships in a move aimed at tightening controls on Russia’s so-called “shadow fleet ” of aging ships. The government in Stockholm said that, starting July 1, the coast guard …

Sweden said Saturday it will step up insurance checks on foreign ships in a move aimed at tightening controls on Russia’s so-called “shadow fleet ” of aging ships. The government in Stockholm said that, starting July 1, the coast guard …