Britain slashed its involvements in the Middle East after the humiliating Suez Crisis of 1956. However Britain did forge close military ties with the United States, France, and Germany, through the NATO military alliance. After years of debate (and rebuffs), Britain joined the Common Market in 1973; which became the European Union in 1993. However it did not merge financially, and kept the pound separate from the Euro, which partly isolated it from the EU financial crisis of 2011. In June 2016, the UK voted to leave the EU.