What Is Meant When Politicians Use the Expression "Politics Stop

What is meant when politicians use the expression "politics stop at the water's edge"?

A) The partisanship that characterizes domestic policy is suspended in the foreign policy arena.
B) The politicization that characterizes the domestic policy bureaucracy does not apply to agencies involved in foreign policy.
C) The imbalance of power that exists between the president and Congress in domestic policy does not apply to questions of foreign policy.
D) The effects of globalization in foreign policy do not apply to domestic policy questions.