parley
US /ˈpɑːr.li/
UK /ˈpɑːr.li/

1.
a conference between opposing sides in a dispute, especially a discussion of terms for an armistice or treaty
:
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The two sides agreed to hold a parley to discuss a ceasefire.
•
The general called for a parley with the enemy commander.
1.
to hold a conference with the opposing side to discuss terms
:
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The diplomats decided to parley with the rebels to avoid further bloodshed.
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He attempted to parley with the captors for the release of the hostages.