The Guardian | Julian Borger: Despite pressure from UK and France, US president expected to declare Tehran in violation of agreement but Senate could yet block reimposition of sanctions

European governments fear a concerted effort to persuade�Donald Trump�to continue to certify the Iran nuclear deal may have failed and are now looking for other ways to try to salvage the two year-old agreement.

European lobbying efforts are now focused on Congress which will have two months to decide � in the absence of Trump�s endorsement of the 2015 deal � whether to reimpose nuclear-related sanctions.

Fresh sanctions could in turn trigger Iranian withdrawal and a ramping up of its now mostly latent nuclear programme, taking the Middle East back to the brink of another major conflict.

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