Possible Clues:

• Spites Blix over possible arms sales, say?
• Perceptible by the eye
• Showing up brother or sister in wicked situation
• Offensive to keep relative in view
• Easy to see
• Evident that it can be seen
• Nearly all of trip's on mostly barren plain
• Absurd to change leader -- that's plain to see
• Not having been given a good enough hiding?
• What's bad about brother or sister is obvious