Russian Foreign Minister Sergey Lavrov on a visit to Tehran Wednesday reaffirmed Moscow’s support for the 2015 accord and blamed the US for undermining it. He spoke after his counterpart, Mohammed Javad Zarif, had announced that Iran would “diminish its commitments” to the accord. Lavrov said Moscow would continue to work with the remaining signatories after the US withdrawal, to ensure obligations are honored. Germany and the UK urged Tehran to uphold the pact. The chancellor’s spokesman said: “We as Europeans, as Germans, will play our part and we expect full implementation from Iran as well.” In London, a 10 Downing Street spokesman said: “Iran’s decision to no longer respect the terms of the deal with world powers is an “unwelcome step” that could lead to new Western sanctions. Britain would hold talks with its partners, particularly France and Germany, over its next steps.