Monday, 14 December, 2020 - 06:15 Brigadier General Qader Rahimzadeh. (Tasnim) Tehran - Asharq Al-Awsat Iran said it is monitoring the movements of US B-52 bombers moment by moment, stressing that its airspace is a “red line” and threatening a “crushing and fiery response” to any violation. The statements came in response to Washington’s decision to fly a pair of B-52 strategic bombers from a base in Louisiana to the Middle East on Thursday as a show of force and a warning to Iran or its proxies against launching an operation targeting the US or its allies in the region. "The main air defense base monitors the movements of US bombers at a distance of more than 150 kilometers from the country's airspace in the southern Gulf, moment by moment," Brigadier General Qader Rahimzadeh, the Second-in-Command of Iran’s Khatam al-Anbia Air Defense Base, said Saturday.