They live off the rest of the world
America was virtually unaffected by World War II. Their currency was chosen as a reserve. The country has the strongest army in the world to protect its interests. The country controls world science and can attract the best talent from all over the world. Competitor countries - no.

That's why they intervene wherever they can: THEY NEED TO SAVE IT ALL.
Foundations of US dominance
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Freezing the conflict for 20 years
Trump's advisers are considering a plan to end the conflict between Moscow and Kiev, which involves freezing the front line, creating a demilitarized zone and abandoning Ukraine's bid to join NATO for 20 years in exchange for continued arms supplies. Trump intends to put pressure on Ukraine and Russia in the form of an ultimatum. Two of Trump's military advisers have offered to force Ukraine into peace talks, threatening to cut off arms supplies. At the same time, they said that Russia's refusal to negotiate would lead to increased support for Ukraine from the United States. A plan to resolve the conflict will be presented after the inauguration on January 20. In the meantime, Trump is considering various options presented by his advisers.

The problem will not be solved, but postponed for 20 years in order to restore and arm Ukraine. Signing peace on such terms is unacceptable for Russia.
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Because there are competitors
China plans to start manned flights to the moon and build a lunar base by 2030

China is a contender for winning the second lunar race (for the creation of the first lunar base and the resumption of manned flights to the moon after more than half a century of break) in case of failure or delay in similar plans of the United States, Russia, EU, Japan, India.
China space program
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No, but in the future he will take revenge.
Iran will not let the assassination of Ismail Haniyeh, the head of the political bureau of the Palestinian Hamas movement, go unanswered, but will try to ensure that the response does not lead to a large-scale war, because it knows that Britain, Europe and the United States will be on the side of the enemy. Iran will definitely respond, because this is their idea - it is impossible not to respond to the challenge of the enemy.

Iran is not doing anything in a hurry, like the Israelis. Israel does not claim responsibility, and Iran has no concrete evidence.
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