In the opinion of some leaders, including representatives of the European Union, trade wars are slowing down global economic growth. The most dangerous effects are seen in the customs war between the US and China, about which the leaders of these countries are to talk about in private on Saturday. On the occasion of the Osaka Summit, Donald Trump met with Vladimir Putin. The presidents agreed to continue negotiations on arms control. Putin invited Trump to visit Moscow next year and participate in the parade celebrating the anniversary of the end of World War II. During bilateral meetings, the issue of tensions in the Persian Gulf was also raised. President Trump appealed to German Chancellor Angela Merkel for help in putting pressure on Iran. The plenary session was dominated by economic issues. China, India and Russia have once again expressed their opposition to economic protectionism and unilateral sanctions. The first day of the summit ended with a gala dinner with G20 leaders. Commercial disputes in the center of attention of the participants of the G20 summit in Osaka. There will be direct talks between President Donald Trump and the Chinese and Indian leaders devoted to additional duties. G20 leaders believe that trade conflicts pose a serious risk to the global economy.