Russia's invasion of Ukraine has officially begun. Vladimir Putin announced this morning, at 5:00 Kiev time, a major military operation in Ukraine. The Russianpresident has justified the invasion as a "defense" from Ukrainian separatists who had requested his intervention. Explosions can already be heard near the capital, Kiev, where Xavier Colás is telling us what is happening. From Washington, following the reaction of the US and the UN, which was holding an extraordinary Security Council, Pablo Pardo is watching everything.