Metro Line M4 (Budapest Metro) Metro Line M4 (Budapest Metro) Line 4 (officially: South Buda–Rákospalota (DBR) Line, Metro 4 or M4, and unofficially: Green Line), is the fourth line of the Budapest Metro. It opened on 28 March 2014. The first section, 7.4 km in length and consisting of ten stations, connects the southwestern Kelenföld vasútállomás located in Buda, and the eastern Keleti pályaudvar in Pest, under the River Danube. While three additional sections — one an eastern extension to Bosnyák tér, the second west to Virágpiac, and a third further east to Újpalota — have been planned, these remain unfunded by the Budapest city
Budapest Memorandum on Security Assurances Lavrov claimed that "Russia never violated Budapest memorandum. It contained only one obligation, not to attack Ukraine with nukes". However, Canadian journalist Michael Colborne pointed out "there are actually six obligations in the Budapest Memorandum, and the first of them is “to respect the independence and sovereignty and the existing borders of Ukraine." Colborne also pointed out that a broadcast of Lavrov’s claim on the Twitter account of Russia's embassy in the United Kingdom actually "provided a link to the text of the Budapest Memorandum itself with all six obligations, including the ones Russia has clearly violated — right there