Iran closed Tehran Flight Information Region to all flights except international civil arrivals and departures with prior permission from Iran's Civil Aviation Authority, according to a Notice to Airmen issued on January 14.

The airspace closure took effect from January 14 at 22:15 UTC through January 15 at 00:30 UTC, the NOTAM stated.

The restriction came hours after US President Donald Trump said the United States received information that killings in Iran have stopped. Trump announced on January 13 he has cancelled all meetings with Iranian officials until the "senseless killing of protesters stops."

Germany's aviation authority advised German airlines on January 14 to avoid Iranian airspace through February 10 due to "potential risk to aviation from escalating conflict and anti-aviation weaponry."

Britain temporarily withdrew UK staff from its embassy in Iran on January 14, with the mission now operating remotely. Spain's Foreign Ministry issued a complete travel advisory against Iran, urging Spanish citizens to leave using available means.

US Central Command and regional partners opened a new air and missile defence coordination cell at Al Udeid Air Base in Qatar on January 12. The Islamic Revolutionary Guard Corps said on January 14 that relevant departments will make a final decision on internet access "within one to two weeks."

Most airlines have suspended operations to Iran, with Turkish Airlines resuming flights on January 13 after brief suspensions. The US State Department urged American citizens on January 12 to leave Iran immediately via land borders to Armenia or Turkey.

Protests in Iran that began on December 29 following the rial's collapse have continued despite a near-total internet blackout imposed on January 8.

The latest verified death toll from Iran's protests stands at 2,571 as of 14 January, according to the US-based Human Rights Activists News Agency (HRANA), which says it has confirmed 2,403 protester deaths, 147 government-affiliated personnel, 12 children, and 9 non-protesting civilians, with over 18,100 arrests.

Iranian state media acknowledged "a lot of martyrs" without specifics, while opposition outlet Iran International claims up to 12,000 killed.