Complex sentence: The creation of Greater Romania in 1918 was viewed, as regards the absorption of Bessarabia, as an "imperialist intervention against the socialist revolution in Russia"; the union of Transylvania, as an "intervention against the revolution in Hungary".
Split into simpler sentences: The creation of Greater Romania in 1918 was viewed, as regards the absorption of Bessarabia, as an "imperialist intervention against the socialist revolution in Russia". Likewise, the union of Transylvania, as an "intervention against the revolution in Hungary".