4 down
Sad
that
Spain
has
invaded
a
foreign
port
(7)
Sad that Spain has invaded a foreign port (7)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at a foreign port — that's your definition, pointing you to the Italian city. For the wordplay, sad in a foreign language gives you TRISTE (as in the French or Spanish word), and then Spain chips in as E (the standard abbreviation), which has invaded — been inserted into — TRISTE to give you TRI+E+STE.