Iran yesterday gave a cautious reception to an international proposal aimed at resolving the crisis over its disputed nuclear drive, saying the offer contains "positive steps" but also "ambiguities." The package, presented by European Union foreign policy chief Javier Solana, offers a variety of incentives and fresh multilateral talks if Tehran agrees to suspend uranium enrichment work, which can make both reactor fuel and weapons. "There are positive steps in the proposal, and there are also some ambiguities that should be cleared up," Iran's top national security official, Ali Larijani, said on state television. "We consider that the European will to solve the issue through talks is a correct step, and we welcome this," he said after receiving the proposal and holding two hours of talks with Solana.