Geneva, Switzerland (CNN) -- Guardedly positive tones were sounded Tuesday as Iran and six world powers met in Geneva for the first of two days of talks about Iran's nuclear ambitions -- talks conducted amid a spirit of new optimism since President Hassan Rouhani took office this summer. Iran, which wants the six powers to recognize what it says is the peaceful nature of its nuclear energy pursuits, laid out confidential proposals in the morning. A spokesman for the European Union's foreign policy chief called the presentation "very useful." The two-day talks in Geneva bring together Iran's representatives with those from the so-called P5+1 -- the United States, Russia, China, France and Britain, all countries with permanent seats on the U.N. Security Council, plus Germany.
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Iran presents plan to delegates from six world powers in Geneva
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EU spokesman calls foreign minister's presentation of Iran's proposals "very useful"
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Israel's Netanyahu warns against easing the pressure of sanctions on Iran too soon
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Many in the West fear Iran seeks nuclear weapons; Iran says its intentions are peaceful
"If the @placeholder and other countries say that Iran should not develop a nuclear bomb or should not move towards that, then we can clearly show and prove that.