A spate of arrests, diplomatic expulsions and public humiliations has plunged relations between war-torn Ukraine and its prickly Nato neighbour Hungary to a new low.
At the heart of the row are accusations that Viktor Orban's Fidesz government in Hungary is using the spat to fight his main political rival, the opposition Tisza party, which leads in the polls ahead of 2026 elections.
Earlier this month, Ukraine's SBU security service announced the arrest of two Ukrainian citizens accused of spying for Hungary.
According to the allegations, backed by video and audio evidence, the man and woman were in the pay of Hungarian military intelligence, preparing for Hungarian military action in Ukraine.
Hungary then expelled two Ukrainian diplomats and Ukraine followed suit in a tit-for-tat response that has further damaged already sour relations. Hungary also arrested a Ukrainian citizen and accused him of spying.
Orban is widely seen as Russia's closest ally in the European Union, and his government has broken ranks with his European partners by maintaining trade and opposing sanctions on Russia, refusing to allow the transit of weapons, and comparing Ukraine to Afghanistan.
Now he has accused Kyiv of trying to "vilify" his country.
All eight million Hungarian households recently received a questionnaire from the government, dubbed "Vox 2025", inviting them to reject Ukraine's EU membership.
Under a year ago, Orban presented himself as the only person on the planet other than the Pope, who was trying to secure an unconditional ceasefire.
But his critics depicted his so-called peace mission to Kyiv, Moscow and other capitals as an attempt to reward Russian aggression.
The day after Orban met Russia's Vladimir Putin, Russian missiles struck the Ohmatdyt children's hospital in Kyiv.
Three days later, the leader of the Tisza Party in Hungary, Peter Magyar, brought $40,000 (£29,000) of Hungarian medical aid to the hospital. Opinion polls suggest Magyar could oust Orban from power next April.
The man who drove the Tisza leader to Kyiv, Roland Tseber, is now a target of Fidesz attempts to accuse the Hungarian opposition party of betraying Hungary.
Roland Tseber came across as a fresh-faced, hard-working politician when I met him at a Ukrainian refugee centre in Uzhorod in April.
He was helping distribute medical aid from Hungary, working with Hungarian doctors and psychologists who have supported internally displaced Ukrainians from the eastern war zone, since 2022.
His troubles began within weeks of Peter Magyar's visit, he told me.
