US National Security Adviser Susan Rice says there are relatively few immediate security concerns stemming from Britain's vote to leave the European Union.
But Rice has told an ideas forum in Aspen, Colorado on Sunday that the US will work to ensure continued US-UK cooperation on counter-terrorism and other security issues.
She says the two countries will "remain the closest partners and allies," while the need for NATO members to "stay latched up will be even greater."
"We will do all we can to ensure that the areas in which we are cooperating -- counter-terrorism, you name it, will remain solid," Rice said.
Asked what US President Barack Obama first told British Prime Minister David Cameron when they spoke by telephone on Friday after the vote result was announced, Rice replied: "Bummer."
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She added that the two leaders had talked through the potential outcomes of the vote on several occasions both in April when Obama visited Britain and urged a "remain" vote, and at a G7 summit in Japan in late May.
