After a week of Twitter optimism and threats, U.S. trade talks with China end without a deal, and higher tariffs go into effect. John Fritze reports. USA TODAY

The Trump administration early Friday more than doubled a U.S. tariff on $200 billion in Chinese imports, from 10% to 25%, sharply escalating a trade war between the two countries. The president also threatened to slap a 25% tariff on almost all the remaining $325 billion in goods shipped in from China.

Negotiators for the United States and China ended a session of trade talks in Washington on Friday without an announcement of an agreement, hours after the new tariff hike took effect.

USA TODAY economics reporter

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