Possible Clues:

• Being transported — without info, it's hard to move
• Uncompromising senior officer being conveyed outside
• Unwilling to change to train travelling north with Spanish yes-man
• Impervious to persuasion or reason
• During exercises in which this person falls down, fellow is obstinate
• At home terrible strain with fellow being stubborn
• Obstinate nine starting to waver
• Iran isn't getting new arrangement with bloke being bloody-minded
• Diehard on the way, carrying information
• Stubborn bloke supports strain in exercising