Viktor Orbán's veto could impact Ukraine's financial support.
Hungarian elections are scheduled for 12 April.
Brussels officials are uncertain about the outcome of the veto.
Strategic angle: Officials in Brussels are concerned that Viktor Orbán's veto on the €90 billion loan for Ukraine may extend beyond Hungary's elections.
Viktor Orbán's veto could impact Ukraine's financial support.
Hungarian elections are scheduled for 12 April.
Brussels officials are uncertain about the outcome of the veto.