Europe

NATO leaders resume key summit; Afghanistan, Iraq on agenda

  • President Barack Obama talks with France's President Francois Hollande, right, as they participates in a NATO family photo at the Presidential Palace in Warsaw, Poland, Friday, July 8, 2016. Obama is in Warsaw to attend the NATO Summit. (AP Photo/Susan Walsh)

    President Barack Obama talks with France's President Francois Hollande, right, as they participates in a NATO family photo at the Presidential Palace in Warsaw, Poland, Friday, July 8, 2016. Obama is in Warsaw to attend the NATO Summit. (AP Photo/Susan Walsh)  (The Associated Press)

  • British Prime Minister David Cameron arrives for sessions of the second day of the NATO Summit, in Warsaw, Poland, Saturday, July 9, 2016. US President Barack Obama and leaders of the 27 other NATO countries are taking decisions in Warsaw on how to deal with a resurgent Russia, violent extremist organizations like the Islamic State, attacks in cyberspace and other menaces to allies' security. (AP Photo/Alik Keplicz)

    British Prime Minister David Cameron arrives for sessions of the second day of the NATO Summit, in Warsaw, Poland, Saturday, July 9, 2016. US President Barack Obama and leaders of the 27 other NATO countries are taking decisions in Warsaw on how to deal with a resurgent Russia, violent extremist organizations like the Islamic State, attacks in cyberspace and other menaces to allies' security. (AP Photo/Alik Keplicz)  (The Associated Press)

  • German Chancellor Angela Merkel, right, and German Defense Minister Ursula von der Leyen arrive for sessions on the second day of the NATO Summit, in Warsaw, Poland, Saturday, July 9, 2016. US President Barack Obama and leaders of the 27 other NATO countries are taking decisions in Warsaw on how to deal with a resurgent Russia, violent extremist organizations like Islamic State, attacks in cyberspace and other menaces to allies' security. (AP Photo/Alik Keplicz)

    German Chancellor Angela Merkel, right, and German Defense Minister Ursula von der Leyen arrive for sessions on the second day of the NATO Summit, in Warsaw, Poland, Saturday, July 9, 2016. US President Barack Obama and leaders of the 27 other NATO countries are taking decisions in Warsaw on how to deal with a resurgent Russia, violent extremist organizations like Islamic State, attacks in cyberspace and other menaces to allies' security. (AP Photo/Alik Keplicz)  (The Associated Press)

U.S. President Barack Obama and other NATO leaders have begun the second day of a summit meeting in Warsaw that's expected to lead to decisions about Afghanistan, the central Mediterranean and Iraq.

On Friday, leaders approved the deployment of four multinational NATO battalions to Poland and the Baltic states to deter Russia, as well as a Romanian-Bulgarian brigade for the Black Sea region.

The Warsaw summit, NATO's first in two years, is considered by many to be the alliance's most important since the Cold War.

NATO Secretary-General Jens Stoltenberg says NATO needs to adapt to confront an array of new threats to its member nations' security, including cyberattacks and violent extremism generated by radical Muslim organizations like the Islamic State group.