The Trump administration's controversial travel ban has now been expanded to include Nigeria and five other countries.
Starting February 21, immigration restrictions will be imposed on Eritrea, Tanzania, Sudan, Kyrgyzstan and Myanmar, with US officials explaining that they failed to meet security standards.
Belarus, which had been under consideration for inclusion, did not make it to the list as it took steps to remedy deficiencies in recent months.
Temporary visas for tourists, business people, students and workers from those nations will remain unaffected.
The US will also stop issuing "diversity visas" to nationals of Sudan and Tanzania.
Critics had earlier criticised US President Donald Trump's 2017 travel ban on Iran, Libya, Somalia, Syria, Yemen, North Korea and Venezuela as discriminatory.
South Korea's Constitutional Court on Friday decided to oust President Yoon Suk Yeol, upholding parliament's impeachment motion over his short-lived imposition of martial law last year that sparked the country's worst political crisis in decades.
At least seven migrants have died, including one boy, one girl and two women, after their boat sank off the Greek island of Lesbos, Greece's coastguard said on Thursday.
The death toll from Myanmar's devastating earthquake has surpassed 3,000, with hundreds more missing, as forecasts of unseasonal rain presented a new challenge for rescue and aid workers trying to reach people in a country riven by civil war.
Russian forces unleashed an hour-long barrage of drones on Kharkiv, Ukraine's second city, late on Wednesday, triggering a number of fires but causing no casualties in the second such attack in the course of the day, the regional governor said.