Britain and Germany today agreed on their continued commitment to the nuclear deal with Iran after US President Donald Trump decided to decertify the agreement.
"They agreed the UK and Germany both remained firmly committed to the deal,” the spokeswoman said.
"They also agreed the international community needed to continue to come together to push back against Iran’s destabilising regional activity, and to explore ways of addressing concerns about Iran’s ballistic missile programme."
The Iran deal was struck in 2015 after nine years of negotiations aimed at curtailing the Middle Eastern state's nuclear weapons-building capacity, in exchange for the lifting of a range of economic sanctions imposed by the West.
The accord must be re-certified by the US every 90 days, but Trump defied his top advisers by threatening to end the agreement. Earlier this month, he said Iran had "not lived up to the spirit of their agreement".
"The Iranian regime supports terrorism and exports violence and chaos across the Middle East," he added.
The US congress now has 60 days to decide whether to impose economic sanctions on Tehran that were lifted under the pact.