Ryan says that the United Nations complex is US soil, which is incorrect. The UN is technically an international territory, and by agreement, the US may only enter upon agreement of the Secretary General. Also, by agreement, no person may seek refuge at the UN who is wanted by the US.
At the end of episode, right after "2 years" passed, Budapest at night was on the screen but it read "Moscow"
At the last part of the episode, right after "Two Years Later", the Hungarian Royal Palace and the Coronation Church of the last two Habsburgs can be seen next to the Széchenyi Chain Bridge (built in 1849) over the Danube River---then immediately the Hotel Ukraine (opened in 1957 in Stalinist style), Roseksportles and Belyy Dom buildings in the Russian capital by the Moskva River: there is about 2000 km distance the Central European Budapest and the Eastern European Moscow.