no-fly zone

Several American foreign policy leaders at the time, like Hillary Clinton and Susan Rice, wanted a Western coalition to go further and establish a no-fly zone to protect Syria’s cities from Assad’s wanton slaughter.

It is the first time the South Korean leader's office, which is a designated no-fly zone, has been hit by balloons launched by Pyongyang.

However, Nato countries have not sent troops to Ukraine, and ruled out using their air forces to impose a no-fly zone over the country, because of fears such action could provoke a direct conflict with Russia.

Both Koreas in recent months have breached their 2018 military agreement to reduce border tensions, which had established buffers and a no-fly zone.

It also set up a “no-fly zone” over the land and sea border.