About one-sixth — 16% — of global gasoline exports originates in the U.S. This critical export provides Americans with jobs and eases the U.S. trade deficit. It also keeps other countries dependent on us — the kind of economic leverage President Trump is always talking about.

The global ocean shipping industry that handles 80% of world trade is navigating a sea of unknowns as U.S. President Donald Trump stokes trade and geopolitical tensions with historical foes as well as neighbors and allies.

President Donald Trump’s 25% tariffs on goods from Mexico and Canada, plus an additional 10% tariff on Chinese imports, started just after midnight Tuesday—potentially leading to price hikes on a range of imported goods, from food and alcohol to cars and prompting Canada and China to announce retaliatory tariffs.