What major international events happened in 2019?

Ukraine Crisis In the early morning of February 24, Russian President Vladimir Putin gave a televised speech saying that he had decided to launch a special military operation in the Donbas region. Putin said in his speech that Russia has no plans to occupy Ukraine. Russia has been trying to reach an agreement on NATO's non-expansion eastward for 30 years, but has been deceived, pressured and blackmailed. Putin also pointed out that NATO combat vehicles were moving towards the Russian border. In the early morning of February 24, several explosions were heard over Kiev, the capital of Ukraine. Ukrainian President Zelensky said in a video speech posted on social media early that morning that Ukraine would implement a state of war. He also expressed the hope that people would stay calm and try not to go out. On May 18, the ambassadors of Finland and Sweden to NATO submitted their applications to join NATO to NATO Secretary-General Stoltenberg at a ceremony held at the NATO headquarters in Brussels. At the end of September, four leaks were discovered in parts of the "Nord Stream-1" and "Nord Stream-2" pipelines that transport natural gas from Russia to Germany via the Baltic Sea in waters near Sweden and Denmark. Swedish measuring stations have detected two strong underwater explosions in the sea area where the pipeline leaked. All parties generally believe that this incident was a "deliberate sabotage". On October 8, according to the Russian National Counter-Terrorism Committee, a truck exploded on the Crimean Highway Bridge, causing seven oil tanks on a freight train on the railway bridge parallel to the highway bridge to be ignited; part of the highway bridge Damaged and collapsed. The Crimean Bridge crosses the Kerch Strait and connects the Crimean Peninsula and the Krasnodar Territory of Russia. It has a total length of 19 kilometers and a cross-sea section of 7.5 kilometers. It is a dual-purpose railway and highway bridge. On November 15, according to the Polish News Agency, a missile fell into Poland on the 15th local time and caused an explosion, killing two Polish civilians. Poland, NATO and the United States all stated on the 16th that the explosion in eastern Poland may have been caused by a Ukrainian anti-aircraft missile and was not a deliberate attack on Poland. U.S. Defense Secretary Austin said on the 16th that the explosion was likely caused by a Ukrainian anti-aircraft missile that landed in Poland, but Russia should bear the ultimate responsibility. The U.S. Supreme Court overturned Roe v. Wade. On June 24, the U.S. Supreme Court overturned Roe v. Wade, which protected women’s right to abortion, which means that women’s right to abortion will no longer be protected by the U.S. Constitution. Roe v. Wade was a "landmark" case in 1973 when the U.S. Supreme Court ruled on women's right to abortion. The Supreme Court ruled at the time that women had a constitutionally protected right to abortion.