Grounded aircraft, stranded tourists as army chief urges protesters to leave

What does the phrase 'Just asking' imply in a conversation?

In what situations might someone say 'Just asking'?

What is the significance of the instruction 'Underline please underline only one line'?

How does the word 'please' affect the tone of the request?

What does the statement 'That's not that time, that's why' suggest about the context?