TEHRAN, Iran, April 21, SPA -- The U.N. nuclear agency's deputy chief has arrived in Tehran for nuclear talks with Iranian officials, the Associated Press reported. IAEA Deputy Director-General Olli Heinonen's discussionsMonday with Iranian officials will focus on allegationsthat Iran is testing high explosives and seeking to designa missile re-entry vehicle. Iran dismisses as «fabricated» the allegations and insists its nuclear program is purely peaceful and geared solely toward producing electricity. --SPA www.spa.gov.sa/548270