Turkish President Recep Tayyip Erdogan, who arrived Sunday in Brussels to attend the NATO Leaders’ Summit, met with the heads of NATO member countries as part of his bilateral talks ahead of the summit.

Erdogan held separate talks with Lithuanian President Gitanas Nauseda, Hungarian Prime Minister Viktor Orban, and Latvian President Egils Levits.

A NATO summit is the gathering of the leaders of NATO's 30 member countries.

NATO leaders will discuss key issues, take decisions about the future of NATO and agree on concrete measures to adapt the Alliance, as part of the NATO 2030 agenda.