The Russian invasion of Ukraine began on February 24, 2022, marking a significant escalation in the ongoing Russo-Ukrainian conflict that began in 2014.

Volodymyr Zelenskyy is the current president of Ukraine and has been leading the country's defense against the Russian invasion.

Mariupol, a strategically important port city in southeastern Ukraine, has been under siege by Russian forces since the early days of the invasion and has faced intense fighting and humanitarian suffering.

Vladimir Putin, the president of Russia, ordered the invasion of Ukraine in February 2022.

Kyiv, the capital city of Ukraine, has been the target of Russian attacks and has faced significant damage and loss of life during the conflict.

The United States has been a major provider of military and humanitarian aid to Ukraine during the war, supplying weapons, ammunition, and financial assistance.

The Organization for Security and Co-operation in Europe (OSCE) has been involved in mediating peace talks between Ukraine and Russia.

Russian forces captured the Chernobyl Nuclear Power Plant, the site of a major nuclear disaster in 1986, early in the invasion, raising concerns about the safety and security of the facility.

Belarus has been accused of providing military support to Russia during the war, allowing Russian troops to use its territory for staging and launching attacks.

Kharkiv, Ukraine's second-largest city, has been a major target of Russian shelling and missile strikes, resulting in significant destruction and civilian casualties.

The Council of Europe, an international organization promoting human rights, democracy, and the rule of law, suspended Russia's membership due to its actions in Ukraine.

Odessa, a major Ukrainian port city on the Black Sea, has been blockaded by Russian naval forces, disrupting the export of grain and other agricultural products from Ukraine.

Germany has been a major provider of financial and humanitarian aid to Ukraine during the war, offering loans, grants, and support for refugees.

Hostomel, a town near Kyiv, was the site of a major battle between Ukrainian and Russian forces in the early days of the invasion, as Russian forces attempted to capture an airport there.

The United Nations High Commissioner for Refugees (UNHCR) has been coordinating the delivery of humanitarian aid to Ukraine during the war, providing assistance to refugees and internally displaced persons.