Move carefully, say, touring Germany and Spain (4)
I believe the answer is:
edge
'move carefully' is the definition.
(as in to edge along)
'say touring germany and spain' is the wordplay.
'say' becomes 'eg'.
'touring' means one lot of letters goes inside another (touring can mean going round).
'germany' becomes 'd' (international vehicle registration code).
'and' means one lot of letters go next to another.
'spain' becomes 'e' (abbreviation for Espana).
'eg' going around 'd' is 'edg'.
'edg'+'e'='EDGE'
(Other definitions for edge that I've seen before include "Upper hand" , "Guitarist with U2" , "Advantage (informal)" , "Cutting side as of knife, or margin" , "Intense quality; limit" .)