WASHINGTON, Sept 1 (Reuters) - The Biden administration will for the first time send controversial armor-piercing munitions containing depleted uranium to Ukraine, according to a document seen by Reuters and separately confirmed by two U. nuclear watchdog, the International Atomic Energy Agency, says that studies in former Yugoslavia, Kuwait, Iraq and Lebanon "indicated that the existence of depleted uranium residues dispersed in the environment does not pose a radiological hazard to the population of the affected regions. See here for a complete list of exchanges and delays