"As the euro weakens, there is also pressure to weaken the crown. If there were no interventions, it would be weaker, somewhere above CZK 25 [to EUR 1] It doesn't just get weaker thanks to interventions. If it developed like the Hungarian forint or the Polish złoty, it would be up to CZK 26. [The intervention] costs a lot in foreign exchange reserves," David Navrátil, chief economist of Česká spořitelna, said.