As US and EU sanctions aimed at Iran's nuclear programme continue to escalate, an increasing number of Iranians studying abroad are finding themselves in the firing line. Bank accounts have been frozen, student loans denied and university applications rejected...[refers to TCF, Discover Student Loans, NatWest, Citbank, RBS, Barclays, HSBC, Lloyds. Includes comments by banks. Also mentions Santander, which opened an account for an Iranian student who had been denied by other banks]