Tehran, Feb 27, IRNA – Secretary-General of North Atlantic Treaty Organization (NATO) Jens Stoltenberg who has recently "got worried" about Iran’s actions in the Mideast region ignores the fact that NATO’s US-led acts at least during the past 20 years including the occupation of Iraq and warmongering acts in Afghanistan have been the main causes for regional insecurity.Tehran, Feb 27, IRNA – Secretary-General of North Atlantic Treaty Organization (NATO) Jens Stoltenberg who has recently "got worried" about Iran’s actions in the Mideast region ignores the fact that NATO’s US-led acts at least during the past 20 years including the occupation of Iraq and warmongering acts in Afghanistan have been the main causes for regional insecurity.