On 15 June 1967, following the Six-Day War, the Assembly of Western European Union (WEU) adopts Recommendation 158 on the situation in the Middle East, urging the WEU Council to promote the conclusion of a peace treaty between Israel and its neighbouring states so as to guarantee lasting peace in the region. The Assembly also reaffirms the importance of working out plans to prevent a new arms race in the Middle East and asks the Council to establish a humanitarian aid plan. From 5 to 10 June 1967, Israel launched a pre-emptive attack on Egypt, Jordan and Syria. This brief conflict resulted in a decisive victory for Israel over its Arab neighbours.