It seems that those Iranian protesters are now engaged in a hunger stike. From AP, with thanks to Kemaste and RB:
A spokesman for a group of unarmed Iranian protesters holed up on a Lufthansa airliner at Brussels airport said tonight they are on a hunger strike and are prepared to die for their cause to see the overthrow of the Iranian government.
“We won’t be moved from here unless we die and they take our bodies from the airplane,” said the man who gave only his first name, Ira, in a telephone interview with The Associated Press from the plane.
May their cause prevail.