Possible Clues:

• Takeover at the start of 3 down and end of 7 down
• Stroke, making murmuring sound
• Attempt to seize power company at an end
• Surprised expression heard in clever stratagem
• Trophy inscribed with old triumph
• Cheerful after company's success
• Forcible overthrow of a government
• Company leading hostile takeover
• Peacenik in front of judge rising
• Eye-opening act