Original sentence: Both leaders recognising the need for peace resulted in more friendly relations, with Venizelos even nominating Atatürk for the Nobel Peace Prize in 1934.This was followed by the Balkan Pact of 1934, in which Greece and Turkey joined Yugoslavia and Romania in a treaty of mutual assistance and settled outstanding issues (Bulgaria refused to join)
Edited sentence: This was followed by the Balkan Pact of 1934, in which Greece and Turkey joined Kingdom of Yugoslavia and Romania in a treaty of mutual assistance and settled outstanding issues (Bulgaria refused to join)