MOSCOW — RECENT events surrounding Syria have prompted me to speak directly to the American people and their political leaders. It is important to do so at a time of insufficient communication between our societies.Relations between us have passed through different stages. We stood against each other during the cold war. But we were also allies once, and defeated the Nazis together. The universal international organization — the United Nations — was then established to prevent such devastation from ever happening again.The United Nations’ founders understood that decisions affecting war and peace should happen only by consensus, and with America’s consent the veto by Security Council permanent members was enshrined in the United Nations Charter. The profound wisdom of this has underpinned the stability of international relations for decades.No one wants the United Nations to suffer the fate of the League of Nations, which collapsed because it lacked real leverage. This is possible if influential countries bypass the United Nations and take military action without Security Council authorization.The potential strike by the United States against Syria, despite strong opposition from many countries and major political and religious leaders, including the pope, will result in more innocent victims and escalation, potentially spreading the conflict far beyond Syria’s borders. A strike would increase violence and unleash a new wave of terrorism. It could undermine multilateral efforts to resolve the Iranian nuclear problem and the Israeli-Palestinian conflict and further destabilize the Middle East and North Africa. It could throw the entire system of international law and order out of balance.Syria is not witnessing a battle for democracy, but an armed conflict between government and opposition in a multireligious country. There are few champions of democracy in Syria. But there are more than enough Qaeda fighters and extremists of all stripes battling the government. The United States State Department has designated Al Nusra Front and the Islamic State of Iraq and the Levant, fighting with the opposition, as terrorist organizations. This internal conflict, fueled by foreign weapons supplied to the opposition, is one of the bloodiest in the world.Mercenaries from Arab countries fighting there, and hundreds of militants from Western countries and even Russia, are an issue of our deep concern. Might they not return to our countries with experience acquired in Syria? After all, after fighting in Libya, extremists moved on to Mali. This threatens us all.From the outset, Russia has advocated peaceful dialogue enabling Syrians to develop a compromise plan for their own future. We are not protecting the Syrian government, but international law. We need to use the United Nations Security Council and believe that preserving law and order in today’s complex and turbulent world is one of the few ways to keep international relations from sliding into chaos. The law is still the law, and we must follow it whether we like it or not. Under current international law, force is permitted only in self-defense or by the decision of the Security Council. Anything else is unacceptable under the United Nations Charter and would constitute an act of aggression.