Use the Westlaw International Tab to answer the following questions:

a. What BNA Tax Management Portfolio is related to operating a business in Ireland?

b. According to Langer on Practical International Tax Planning, how many totalization agreements with regards to social security does the United States have with foreign countries?

c. What is the date of the last article in International Tax review to mention the IRS’s case against DHL for the transfer pricing of its intangibles?