US Ambassador to the UN Nikki Haley has announced that Iran is now on notice. At an emergency UN Security Council meeting, Haley warned that the ongoing demonstrations in Iran could escalate into a full-blown conflict. Russia has accused the United States of interfering in Iran's national affairs. The US called the emergency session after anti-government protests spread across Iran during the past week, the biggest demonstrations since 2009. At least 21 people have been killed, while hundreds have been arrested.