Japan

huh? I checked the news and they're still open for business? What are you talking about?

Do you possibly mean possible xenophobia displayed in the Showa Region in 1930s? Click on the following hyperlink:

http://en.wikipedia.org/wiki/Xenophobia_in_Showa_Japan

I believe he refers to the Tokugawa shogunate (1603-1867), when after the seclusion laws of 1635 only inbound ships from Korea, China and the Dutch Republic were allowed. If I remember correctly a reason for the seclusion laws was to keep out Christian missionaries and other foreign influences that could jeopardise the status quo in Japanese society.