Very well. Thank you, madam.
After the Soviet Union collapse, Ukraine inherited a nuclear arsenal that was probably the third or fourth largest in the world. Of course, that became an extremely worrisome situation. After several years of negotiations, Ukraine agreed to become a non-nuclear state, which led to the famous Budapest Memorandum in 1994. That agreement was signed by the nuclear powers, that is, the United States, Great Britain, Russia and Ukraine. Article 2 talks very specifically about the recognition of Ukraine's territorial integrity, in other words, respect for its borders.
There is the fact that the Crimea became part of Ukraine somewhat accidentally. We know the story of how Mr. Khruchtchev famously gave it away in 1954, and so on. Nonetheless, when it comes to the Soviet Union and also Yugoslavia, this is now international law. The implosion took into account internal boundaries. The Crimea was part of Soviet Ukraine and therefore became part of independent Ukraine.
International law experts may question to what extent that article has the force of law, but the Ukrainian authorities have certainly interpreted and understood it that way.
I am speaking a little bit outside my area of expertise here, but it is abundantly clear that if this violation of international law, that is, state borders, is accepted de facto, there will be considerable repercussions for nuclearization or nuclear proliferation in states that are being asked to actually abandon their arsenals.