Since 2005, Iran's nuclear program has become the subject of contention with the international community, mainly the United States. Many countries have expressed concern that Iran's nuclear program could divert civilian nuclear technology into a weapons program. This has led the United Nations Security Council to impose sanctions against Iran which had further isolated Iran politically and economically from the rest of the global community. In 2009, the U.S. Director of National Intelligence said that Iran, if choosing to, would not be able to develop a nuclear weapon until 2013.