Then there are the reasons for the outbreak of the Ukrainian crisis, the policies of three presidents, the reasons for foreign debts, and why Laos turned to Russia.
Add some historical roots of Crimea, why Russia attaches so much importance to it and why Crimea surrendered so quickly.
If you want to talk about it, you can talk about the EU's energy dependence on Russia, Russia's economic situation after the Cold War, the international environment and even the possible impact of the shale gas revolution on Russia's future.
You can talk for an hour if you like.
With the development of the times and the progress of science and technology, the computer network has developed rapidly, and the security