Ukrainian President Viktor Yushchenko plans to visit Iran in the first half of this year, the presidency announced here Thursday after the ex-Soviet republic's new leader held talks with a visiting Iranian envoy. Mehdi Safari, a special envoy of Iranian President Mohammad Khatami, discussed ways to expand economic cooperation between the two countries, said a statement issued by Yushchenko's office. Among areas where joint projects are being studied are the construction of gas pipelines, the oil sector, shipbuilding, space technology and the aircraft industry, the statement said. Yushchenko, a reformist liberal who took power earlier this year after his Western-backed...