As the dust settles on a landmark ruling against Jordan-based Arab Bank, found liable for knowingly processing transactions of Hamas members and thereby supporting its attacks on civilians, legal experts have just begun to parse the implications for banks that do business in the volatile Middle East. But as the case heads toward appeal, the world’s financial institutions have been put on notice: Turn a blind eye to clients designated by the U.S. as "foreign terrorist organizations," as Arab Bank was accused of doing, and face the consequences…The Arab Bank suit, and a series of others like it on dockets around the U.S., could have far-reaching implications for the region's economy if foreign banks and companies decide that doing business in the Middle East has become too risky.