(" How would it look if a top player today played in a tournament organized by Israel for propaganda value on the West Bank?")

It was an all-play-all event with 12 players
there were the Czechs Foltys, Opocensky, Zita, Kottenauer, Rejfir, and Hromadka there were two Germans, the veteran Sämisch and the youngster Junge and the World Champion, Alexander Alekhine
a Russian emigre who had settled in France
where he deserted his Russian wife and married a wealthy American a chess player of tremendous ability
famed for the depth of his thought and his commitment to the game Alekhine the player evoked universal admiration
but Alekhine the man often aroused hostility

The outbreak of war found Alekhine in Argentina
competing in the Chess Olympiad
this was a team event
Germany narrowly won from Poland
as Poland was eliminated from the map
the German and Polish masters stayed in South America Alekhine did not
he returned to France and joined the French Army
on the French capitulation he was demobilised
he went to Portugal for a time
then returned to France
he mingled with the Nazi conquerors
played in their tournaments
wrote articles for their newspapers
where he stated that only "Aryans"
could "play chess artistically"
(to prove this point
the SS murdered the Jewish masters
Landau of Holland, Wolf of Austria, and Przepiorka of Poland) Alekhine was brusque and rude and often drunk
but he was still Champion of the World.

But to chancho; Alekhine was not playing for the Germans or representing the Germans; the German favorite was probably Junge. Both Keres and Alekhine had at least partly a reason to play to earn money for a living. Keres won some games but just didnt play as strong as Alekhine during this period. This may be cause he had psychological problems because of the war, but he certainly did not have to throw his games when playing Alekhine.

An other note;
Before the war; at the Olympiad Alekhine had strongly insulted the Germans; and his later writings ( he himself says he didnt write them; probably a lie) are probably more to be explained as out of opportunism then out of conviction- that doesnt make it any less bad of course.

As for Euwe (@Koster); Euwe had a job even during the war; and didnt need to play. Also he played much less tournaments before and after the war too. However i think it doens matter cause Alekhine and Keres were not wrong for playing chess during the war.

Maybe Keres being forced to blow the WC tournament IS true.

As opposed to, say, the Italian Wehrmacht?

But I accept the point, even if it's one I wasn't arguing against.