NATO commemorates 75th anniversary; Secretary-General once again emphasizes the importance of unity. NATO was established on April 4, 1949, when 12 countries signed a treaty.
NATO has expanded to 32 member states with the addition of Sweden last month. Some are concerned that if Trump, who has criticized European countries for not paying enough for their defense costs, returns to office in this fall's US presidential election, it could affect the unity of NATO. The Dutch PM Rutte is seen as a strong candidate as he has gained support from countries such as the United States.