Iran has issued a NOTAM, a notice alerting an aircraft of dangers en route, for the center, west, and northwest of the country, advising aircraft to change their routes.

Attack may occur Monday, sources say

US Secretary of State Antony Blinken said in a G7 conference call on Monday that an attack carried out by Iran and Hezbollah against Israel could begin as early as Monday.
Iran's Supreme Leader, Ayatollah Ali Khamenei looks on during a meeting at the IRGC Aerospace Force achievements exhibition in Tehran, Iran November 19, 2023 (credit: Office of the Iranian Supreme Leader/West Asia News Agency/Reuters)
Iran's Supreme Leader, Ayatollah Ali Khamenei looks on during a meeting at the IRGC Aerospace Force achievements exhibition in Tehran, Iran November 19, 2023 (credit: Office of the Iranian Supreme Leader/West Asia News Agency/Reuters)
According to Barak Ravid on Axios on Sunday, citing three US and Israeli officials, the attack could occur on Monday. 

In comparison to Iran's April 13 attack, Israel was anticipating a “more aggressive” attack this time around, an Israeli official also told CBS News.

Mathilda Heller and Walla! contributed to this report.