Without prior approval of the Borrower, the Lender may, at any time, set-off due and payable obligations owed by the Borrower against any amounts held by the Lender on behalf of the Borrower or any due and payable obligations owed by the Lender to the Borrower. If the obligations are in different currencies, the Lender may convert either obligation at the prevailing currency exchange rate for the purpose of the set-off.