Britain says "deeply concerned" by Iran's 20% uranium enrichment

Britain said it was "deeply concerned" by Iran's commencement of 20% uranium enrichment on Jan. 4, in a joint statement with France and Germany.

"We strongly urge Iran to stop enriching uranium to up to 20% without delay," the countries said on Wednesday.

Iran resumed 20% uranium enrichment at an underground nuclear facility, the government said on Monday, breaching a 2015 nuclear pact with major powers.