Whether you trade oil or the US dollar, you will experience more volatility in the coming weeks as a result of the latest Opec announcement. But there is a bigger issue coming up that traders and investors alike should be aware of.A global revolution is about to unfold, and anyone with a trading account can profit from it. This article will break down Opec, BRICS, and war for you one by one, so take a moment to read what may be the most important article you read this year.What is Opec?Let's start with the basics of Opec. The Organization of the Petroleum Exporting Countries (Opec) is an intergovernmental international organization originally composed of 13 member countries: Algeria, Angola, Ecuador, Iran, Iraq, Kuwait, Libya, Nigeria, Qatar, Saudi Arabia, the United Arab Emirates and Venezuela. Together, these countries make up the world's largest oil producer, and if a country is not on good terms with Opec, it can be difficult to meet its oil demand.Later, Azerbaijan, Bahrain, Brunei, Kazakhstan, Malaysia, Mexico, Oman, Russia, South Sudan and Sudan joined Opec, thus expanding the alliance of crude oil producing countries into Opec +. Since 2017, Opec + has been adjusting the supply of the oil market.These countries' participation in Opec seemed harmless at the time, but an agenda is now emerging that will have a major impact on the oil market, as well as an unimaginable blow to the U.S. economy and the dollar. Here's why.The end of the petrodollarAfter World War II, the dollar became the intermediary currency for most countries to do business with each other. Countries buy dollars and use them to trade commodities, especially oil. The use of petrodollars means that the US economy has enormous influence over international supply and demand transactions, but that influence seems to have waned.Recently, Opec and the United States have been at loggerheads, with Opec accusing the United States of using shale oil production to "prop up" oil prices and weaken Opec's influence on the global oil market.The U.S. spends $138 billion a year on oil imports, making it the largest oil importer after China. So, of course, the United States wants lower oil prices and less dependence on other countries, but other countries don't agree. The US bullying smaller countries with the threat of sanctions has prompted the BRICS to become more proactive recently, and the US does not like it.The BRICS was established in 2001 and consists of Brazil, Russia, India, China and later South Africa. The BRICS countries have put forward several initiatives such as the BRICS New Development Bank and the BRICS Contingency Reserve Fund. In short, the BRICS have created an alternative to the dollar or petrodollar.It is becoming increasingly clear that the BRICS countries are looking for ways to limit US influence over their economies, and who can blame them. When the US housing market crashed in 2008, the global economy fell into recession, and now the US economy is teetering on the brink of a repeat performance.Yet selling petrodollars is angering the world's most powerful military. The US has invaded countries before when oil supplies were threatened, and small countries have always feared US military intervention on their soil. The BRICS was created to protect its members from being left alone in the face of invasion.Another war in the making?There is no doubt that the BRICS pose a major threat to US dominance in global finance. Over the past 12 months, the BRICS countries have become increasingly influential in global affairs. All this is due to a recent BRICS meeting hosted by China.  Moreover, China was a leading force behind the original idea of replacing the petrodollar.Moreover, China's economy is recovering and booming. America's pre-eminence as a global financial leader is at stake, and how the United States will respond to this threat has captured the world's attention. The Cold War between the US and the Soviet Union is still fresh in our minds, and the US already seems to be preparing for another major conflict.As Mark Milley, chairman of the Joint Chiefs of Staff, has said, "China remains our number one long-term geostrategic security challenge."America's intentions are too clear to misunderstand. Some major news sites are already speculating about the possibility of the United States declaring war on China. In an article for Time magazine, James Stavridis, a retired four-star Marine general and former Supreme Allied commander of NATO, argued that "war between the two countries is not inevitable, but it is certainly possible."In light of what US Secretary of Defense Lloyd Austin recently informed a House subcommittee that the latest record-breaking US military budget request is primarily directed at China, James Stavridis's statement is overly cautious.Other experts also expressed concern about rising tensions between the United States and China. In a recent article in The New York Times, Harvard professor Graham Allison argued that both China and the United States are "trapped in Thucydides's trap." The "Thucydides trap" is a term used to describe the tendency for emerging powers and existing powers to come into conflict. "The risk of war between China and the United States is real and escalating," Graham Allison warned.At present, 60% of the U.S. active duty forces are at the highest level of combat readiness and can be ready to enter combat in less than 30 days, and a new war is already imminent, but not yet. It is clear that the current recession is stirring up new conflicts that will cause huge volatility in global markets, especially if the United States goes to war.What can traders expect from oil and the dollarOpec announced on Sunday that it would cut production by 2 million barrels per day (BPD). The move is aimed at addressing concerns over a slowing global economy and rising U.S. shale oil production.The alliance between Opec and BRICS is significant because it could lead to a weaker dollar. Adopting an alternative to petrodollars means that many countries will no longer need dollars.If there is such a large repatriation of dollars, the value of the dollar will fall to a record low. The US simply does not have enough commodities to buy back the dollars it has printed, which means it would have to default. Us inflation will go through the roof, the US economy will collapse, and the only way the US can stop this is its powerful military. As a result, war is imminent.On the oil front, Opec's recent policy of reducing production may contribute to higher prices. But if the political friction between Opec and the United States escalates, Opec may impose sanctions and embargoes on the United States. This has happened before.In 1973, several Arab countries (now members of Opec +) suddenly attacked Israel. The United States came to the aid of Israel, while the Soviet Union sided with Egypt. Soon after, the Organization of Arab Petroleum Exporting Countries (OAPEC) announced an oil embargo against the United States, and oil production was cut by 25%, resulting in the United States and several other countries into an energy crisis.The cost of oil has risen sharply in the United States and many other countries. The United States has begun emergency rationing of oil consumption, limiting the amount of gasoline that can be sold at gas stations.If the US provokes Opec and BRICS, it is not hard to imagine such sanctions and embargoes happening again. There will still be supply from the rest of the world, and since there will be no supply to the United States, a cut of 2 million barrels a day just balances supply and demand. That could be a fatal blow for a country that is experiencing high inflation, scary interest rates and internal discord. Such a chain of events could end American rule and lead to chaos in American society.Of course, these things remain unproven. Only historians can link these events with certainty, but speculators are already connecting the dots, and investors are positioning themselves to take advantage of the coming turmoil.Sum upAn Opec cut of 2m barrels a day means higher prices. As petrodollars are abandoned, the United States may face a depreciation of the dollar. China and the United States are in a tit-for-tat battle for economic dominance that could end in a war in which oil-rich countries tend to side with China.There is no doubt that we live in interesting times. If such systemic changes begin to take place in global financial markets this year, some will gain and some will lose from the turmoil. If you don't already have an active, funded trading account, now might be a good time for you to open one.As these political issues come to the surface and are more widely reported, you can better assess the strength of oil prices and the dollar and trade accordingly. While there will be a run on smaller banks in the United States as the U.S. economy continues to decline, your money parked in Exness and Tier 1 European banks is very safe. The Exness blog will continue to follow the market closely and post insights relevant to traders, so be sure to add us to your browser favorites and visit us regularly.