In a display of strong American support for Ukraine just four days before the anniversary of Russia’s full-scale invasion, US President Joe Biden on Monday made a surprise visit to Kyiv, reported The Washington Post. Kyiv is no stranger to official visits, but this one is different. The fact the US president is meeting Ukraine’s leader in the heart of the capital in the middle of a full-scale conflict is significant and symbolic.The high-risk visit, to a Ukrainian capital that has been under threat of missile attacks, signals continued commitment from the United States, the largest financial and military backer of Ukraine’s effort to repel Russians from its territory, reported The Washington Post. Biden was spotted outside St Michael Golden-Domed Monastery with Ukrainian President Volodymyr Zelenskyy.The Ukrainian capital was in a tight security lockdown with car traffic halted and even pedestrians blocked from certain streets. Shortly afterwards, an air raid siren went off in the city, reported The Washington Post. His visit was shrouded in secrecy. Biden was due to leave for an announced visit to Poland from Washington on Monday evening.