Again, English would make so much more sense as a common language than Arabic. There are more English speakers in Egypt alone than there are Arabic speakers in the whole EU.

What exactly is the point? Most people in Europe speak at least a little English, a ton of people in India speak English, Arabic is completely alien to Europe. There is no advantage to Arabic over English.

Nobody in Europe wants Iran or India to join.

Also, most Iranians apeak Persian, not Arabic.