Moldova and Romania share cultural ties that are centuries old. However, their histories have gone differently. Moldova was annexed as part of the Ottoman Empire from 1538 til 1812. In 1812, the Russian Empire took control of the territory. At the time of the revolutions of 1905 and 1917, Moldova wanted independence and finally, in 1918, (as Bessarabia) joined Romania. Romania joined the Axis in World War 2 and the Soviet Union occupied the territory and established the Moldovan SSR in 1940.
Uniting Moldova and Romania would make it part of the European Union immediately and also part of NATO. However, there are problems with this approach. There is the region of Transnistria, which seeks closer ties with Russia and it essentially a separatist region within Moldova. For this reason, a unification could be problematic. Russia may regard it also as a hostile step agains it.
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