information:filtering
Military

After the dissolution of the Soviet Union, Ukraine inherited a 780,000-man military force on its territory, equipped with the third-largest nuclear weapons arsenal in the world. In 1992, Ukraine signed the Lisbon Protocol in which the country agreed to give up all nuclear weapons to Russia for disposal and to join the Nuclear Non-Proliferation Treaty as a non-nuclear weapon state. By 1996 the country had become free of nuclear weapons.

Ukraine took consistent steps toward reduction of conventional weapons. It signed the Treaty on Conventional Armed Forces in Europe, which called for reduction of tanks, artillery, and armoured vehicles (army forces were reduced to 300,000). The country planned to convert the current conscript -based military into a professional volunteer military. Ukraine's current military consist of 196,600 active personnel and around 900,000 reservists.

Ukraine played an increasing role in peacekeeping operations. In 2014, the Ukrainian frigate Hetman Sagaidachniy joined the European Union's counter piracy Operation Atalanta and was part of the EU Naval Force off the coast of Somalia for two months. Ukrainian troops were deployed in Kosovo as part of the Ukrainian-Polish Battalion. In 2003–2005, a Ukrainian unit was deployed as part of the multinational force in Iraq under Polish command. Military units of other states participated in multinational military exercises with Ukrainian forces in Ukraine regularly, including U.S. military forces.

Following independence, Ukraine declared itself a neutral state. The country had a limited military partnership with Russian Federation and other CIS countries and has had a partnership with NATO since 1994. In the 2000s, the government was leaning towards NATO, and deeper cooperation with the alliance was set by the NATO-Ukraine Action Plan signed in 2002. It was later agreed that the question of joining NATO should be answered by a national referendum at some point in the future. Deposed President Viktor Yanukovych considered the then level of co-operation between Ukraine and NATO sufficient, and was against Ukraine joining NATO. During the 2008 Bucharest summit, NATO declared that Ukraine would eventually become a member of NATO when it meets the criteria for accession.

As part of modernization after the beginning of the Russo-Ukrainian War in 2014, junior officers were allowed to take more initiative and a territorial defense force of volunteers was established. Various defensive weapons including drones were supplied by many countries, but not fighter jets. During the first few weeks of the 2022 Russian invasion the military found it difficult to defend against shelling, missiles and high level bombing; but light infantry used shoulder-mounted weapons effectively to destroy tanks, armoured vehicles and low-flying aircraft. In August 2023, the U.S. officials estimated that up to 70,000 Ukrainian soldiers were killed and 100,000 to 120,000 wounded during the Russian invasion of Ukraine.