abu dhabi iran fulfil commitments nuclear deal world power u.n. inspectors face problems verification efforts international atomic energy agency iaea director-general say monday u.s. president donald trump say early month would continue certify multinational 2015 agreement reach predecessor barack obama warn might ultimately terminate iran would abandon agreement deem serve national interest president hassan rouhani say reaction trump decision also say president revoke international deal ... iran continue honour commitments deal party accord britain germany france russia china european union reaffirm commitment urge unite state back iaea chief yukiya amano whose inspectors task monitor compliance deal reiterate iran adhere iaea state nuclear-related commitments implement amano tell news conference abu dhabi follow trip iran sunday meet rouhani officials request iran ... fully implement nuclear-related commitments main thrust meet iran ... regard activities inspectors discharge responsibility without problem say agreement iran undertake restrict nuclear programme help ensure could put develop atomic bomb exchange lift trade financial sanction hobble oil-based economy amano add tell iranian officials nuclear deal significant gain verification speak sideline international conference nuclear power unite arab emirates amano decline comment u.s. policy towards iran iran absence meet draw together iaea member state iran fulfil nuclear deal commitments iaea chief