Paris for 31 percent of the GDP of France. According to the Economist Intelligence Unit Worldwide Cost of Living Survey in 2018, Paris was the second-most expensive city in the world, behind Singapore and ahead of Zurich, Hong Kong, Oslo and Geneva. The city is a major rail, highway, and air-transport hub served by two international airports: Paris-Charles de Gaulle (the second busiest airport in Europe after London Heathrow Airport with 69.5 million passengers in 2017) and Paris-Orly. Opened in 1900, the city's subway system, the Paris Métro, serves 5.23 million passengers daily, and is the second busiest metro system in
1974 French Embassy attack in The Hague the incident, a café in Paris was bombed which was linked to the embassy crisis. The Japanese Red Army was a communist terrorist organisation dedicated to eliminating the Japanese government and monarchy and launching a worldwide revolution. The organisation carried out many attacks and assassinations in the 1970s, including the Lod Airport massacre in Tel Aviv three years earlier. Three Japanese Red Army members stormed the embassy on Friday 13 September. A few minutes later, three Dutch policemen entered the embassy and were immediately caught under fire. Two policemen were seriously injured due to the gunfire and the other opened