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EU chiefs meet as U.K. vote sends bloc into uncharted waters

SAN FRANCISCO (AP) — The United States is reacting cautiously to the decision by Britain's voters to bolt the 28-nation European Union, with a White House official saying President Barack Obama has been briefed. The official, who insisted on speaking anonymously because of the ongoing events overseas, said Obama is expected to speak with Prime Minister David Cameron "over the course of the next day." "We will release further comment as soon as possible," the official's statement said. Obama has encouraged Britain to remain in the EU but has said the decision ultimately was up to the voters. Before Obama visited the United Kingdom in April, he wrote an op-ed for the Telegraph newspaper encouraging it to remain in the EU. He said Great Britain's presence "magnifies" its influence and helps spread "British values."

White House official: Obama briefed on UK vote to bolt EU