Cases where a warring country unnecessarily squandered its territorial gains?

Futurist

Ad Honoris
May 2014
20,197
SoCal
#1
Other than French King Louis XV's decision to give up the recently conquered Austrian Netherlands in 1748 and Russian Tsar Peter III's decision to give up on East Prussia in 1762, which other cases have there been where a country which is at war unnecessarily squandered its territorial gains in the resulting peace settlement?

Any thoughts on this?
 
Jan 2015
3,329
Front Lines of the Pig War
#2
Other than French King Louis XV's decision to give up the recently conquered Austrian Netherlands in 1748 and Russian Tsar Peter III's decision to give up on East Prussia in 1762, which other cases have there been where a country which is at war unnecessarily squandered its territorial gains in the resulting peace settlement?

Any thoughts on this?

The Ottomans giving up Cyprus perhaps
 
Jan 2015
3,329
Front Lines of the Pig War
#8
They thought that they were going to bribe the British with Cyprus to help retain their other territories, but doesn't seem like they got much help for it.
 

Tairusiano

Ad Honorem
Jun 2012
2,972
Brazil
#9
In 1714 Portugal using military strategy and deception managed to conquest Dutch and French Guyana, but under order of the king they returned the territories.

In the napoleonic wars 1809 a mixed Portuguese and Brazilian army conquered again French Guyana and in 1817 returned Guyana to France.
 

rvsakhadeo

Ad Honorem
Sep 2012
9,105
India
#10
India gave back Pakistan the territory captured by it in the 1965 skirmish in Kashmir and adjoining Punjab, such as some crucial heights, such as Haji Pir Pass in Kashmir, probably under pressure from the Soviet Union leaders at Tashkent peace conference. It is widely believed in India that Prime Minister Lal Bahadur Shastri died, suffering a heart attack, in the night of the signing of the treaty, because he was worried that he might have gifted away the conquered territory to a most unreliable country.
https://en.wikipedia.org/wiki/Indo-Pakistani_War_of_1965
I think even such a wise leader as Ms. Indira Gandhi gifted away some territory after the 1971 Bangladesh Liberation war. But I am unable to recall it immediately.
https://en.wikipedia.org/wiki/Indo-Pakistani_War_of_1971
 
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