Fischer's invention is proving popular with concertgoers, with dozens of people wearing the mask as they took their seats at Friday's performance.
The exercise, called "MAG Days," is a quadrennial event designed to maintain NATO's operational readiness.
Szijjarto rejected the accusations but did not specify where the comments by Minister of State for Europe Michael Roth were published.
It’s an unusual development for Eastern and Central Europe, where leaders of Jewish communities are rarely expelled and seldom express acrimonious public criticism of Israel.
To this day, on the day of his yahrzeit, the 14th day of Av, thousands of people from all around the world are still traveling to Liska to pray at his grave.
“If there were a competition among countries of who is most attacked by the world media, Israel and Hungary would be among the top three for sure” – Hungary's foreign minister.
Hungary has been one of a small number of EU member states - Czech Republic and Austria are the others - that consistently blocked statements against the Trump plan.
The world “must hold Iran accountable and act strongly against Iran’s malign activities,” Foreign Minister Gabi Ashkenazi said.
Szijjártó will only visit Jerusalem, where he will meet with Netanyahu, Foreign Minister Gabi Ashkenazi and Science Minister Yizhar Shay.
The law is part of measures taken by the Hungarian government against what it sees as unfair foreign influence, linked to its disagreements with Soros, who was born in Budapest.