US National Security Adviser Susan Rice assured Israel at high-level talks on Thursday that Washington remained determined to stop Iran developing nuclear arms, the White House said. \"The US delegation reaffirmed our commitment to prevent Iran from acquiring a nuclear ******,\" said a White House statement released after talks in Jerusalem between Rice, Prime Minister Benjamin Netanyahu and senior officials from both sides. \"The delegations held thorough consultations on all aspects of the challenge posed by Iran, and pledged to continue the unprecedented coordination between the United States and Israel,\" it added.