بيلا كون
On 19 March, Hungary received notification of the new demarcation line and demilitaritarised zone from French Lieutenant Colonel Fernand Vix (the "Vix Note"). The Károlyi government would not accept the terms, which was a trigger for the coup d'état by Béla Kun, who formed the Hungarian Soviet Republic. Meanwhile, limited skirmishes took place between Romanian and Hungarian troops. Some Hungarian elements engaged in the harassing the Romanians outside the area controlled by the Romanian Army.