Probably some kind of quid pro quo meeting.
Isn't any agreement between countries or even businesses quid pro quo? I mean, no one gives anyone money or goods with no expectation of getting something in return. Your business would fail if you give away your products for free, and you'd be pretty unhappy if you went to a grocery store, handed over money, and didn't get any produce in exchange.
They met over Sushi. It was Squid Pro Quo.
(What a great name for a sushi roll.)