After Helsinki meeting, German FM says signatories want to build on momentum from last weekend's G7 summit, where Trump indicated willingness to talk to Tehran

In confidential report, International Atomic Energy Agency says Islamic Republic now holds 242.6 kg of enriched material at 4.5% purity

PM cites Tehran's rising regional aggression in phone call with French leader, amid Paris's efforts to facilitate a meeting between Trump and Rouhani

Foreign ministers of European parties to agreement will be joined by EU diplomatic chief Mogherini for discussions on sidelines of bloc meeting in Helsinki

Prime minister was unable to reach US president to convince him not to meet with top Tehran diplomat Zarif at G7, according to report, as Israel worries over Trump-Rouhani summit

Ministers said to cite US president's dialogue with North Korea's Kim Jong Un as disturbing precedent, 'but our capacity to influence and confront Trump is extremely limited'

French President says G7 diplomacy created conditions for historic summit; Trump says meeting will require 'correct circumstances' but sit down will have to happen

Trump says there is 'unity' among leading industrial nations group on preventing Iranians from obtaining nuclear weapons, reassures he is not seeking regime change in Tehran

Iranian FM says Tehran willing to return to nuclear deal if Europeans can find away to work around US sanctions

New British government remains 'strong supporters' of 2015 nuclear pact, says still the best way to prevent Tehran from acquiring atomic weapons