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2020s in international relations

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Russo-Ukrainian war (2022–present)
On 24 February 2022, Russia invaded Ukraine, starting the largest and deadliest war in Europe since World War II, in a major escalation of the existing war between the two countries that began when Russia attacked Ukraine in 2014. The fighting has caused hundreds of thousands of military casualties and tens of thousands of Ukrainian civilian casualties. As of April 2026, Russian troops occupy roughly 20% of Ukraine. From a population of 41 million, about 8 million Ukrainians have been internally displaced and 6–7 million have fled the country, creating Europe's largest refugee crisis since World War II.
Qatar diplomatic crisis
diplomatic crisis between several Arab League countries and Qatar
Saudi-led intervention in the Yemeni civil war
Saudi war against Houthis in Yemen launched in 2015
international sanctions during the Russo-Ukrainian War
economic measures since 2014
Middle Eastern crisis (2023–present)
The Middle Eastern crisis is an ongoing series of interrelated wars, conflicts, and heightened instability in the Middle East as a result of the Gaza war and genocide. It has primarily consisted of conflicts between Israel and Iran-backed militias that form the "Axis of Resistance", including Hamas in the Gaza Strip, Hezbollah in Lebanon, and the Houthis in Yemen; Iran itself has also been involved. Allies of Israel, including the United States, the United Kingdom, and France, have also intervened militarily in various theaters. The crisis has involved nearly all Middle Eastern countries, significantly affecting the region as a whole.
international reactions to the Gaza war
reactions abroad to the conflict between Israel and Palestine from 2023–present
Western Saharan clashes (2020–present)
armed conflict between Morocco and self-proclaimed Sahrawi Arab Democratic Republic and Polisario Front
United Nations Decade on Biodiversity
shadow fleet
sanction evasion in the maritime domain
nuclear risk during the Russo-Ukrainian war
international crisis
International Decade for People of African Descent
United Nations observance (2015–2024 and 2025–2034)
Mexico–United States border crisis
political crisis and ongoing migrant crisis
Rohingya genocide case
legal case
Israeli–Lebanese maritime border dispute
dispute between Lebanon and Israel over a natural gas field
United Nations Decade of Family Farming
Weimar+
Weimar+ (or Weimar Plus) is a European diplomatic and geopolitical alliance first named in February 2025, expanding upon the original Weimar Triangle regional alliance of France, Germany, and Poland (all within the European Union) to include additional major European powers such as the United Kingdom and Italy. The group was immediately established in response to shifts in United States foreign policy towards the ongoing Russo-Ukrainian War and the transatlantic security architecture under the Trump administration, particularly United States president Donald Trump's telephone conversation with