The Federal Reserve can loan to foreign central banks, or to foreign banks that do business in the U.S. and have reserves with the Federal Reserve.
It doesn’t loan to foreign banks that don’t do business in the U.S. directly. Any such loan is coordinated through that country’s central bank.
You are diluted. The US dollar is the world’s reserve currency. It’s the US’s job to make sure the world banks are properly funded in US dollar or, any excuse will do.
You can buy bonds from the US Treasury but the Federal Reserve distributes the cash/credit and by looking at the article, distributes at will worldwide.