clinch the deal 商談を成功させる

clinch the deal, clinch a deal は商談を成功させるです。0:47 actually thanks to France's excellent superiority in terms of technology that we managed to clinch this deal and beat the Japanese and the Germans. 日本とドイツを破って、我がフランスがこの潜水艦受注をゲットできたのは一重にフランスの潜水艦技術が日本とドイツの技術を凌駕しているからです。

Submarine deal: The contract of the century
https://www.youtube.com/watch?v=thLnp-UDhR8  0;46 the extra money clinched the deal and the five bedroom house was sold. 猫のおまけで、この商談はまとまった。
Cat over cash: Couple sell family home including pet cat in the deal
https://www.youtube.com/watch?v=SreuCFQHxVA  0:03 European leaders say it's still worth fighting to keep Greece in the Eurozone, with less than 2 days to clinch a deal.
GREECE - Debt crisis worsens with bank closures
https://www.youtube.com/watch?v=MT1QAfQ_3kA  1:19 that's how many delegates he needs to clinch the deal. ケーシック候補が共和党の指名を受けるためには848人の選挙人を獲得しなければなりません。
Inside the Republican's delegate math in coming weeks

練習問題解答
b-2052 clinched a deal
b-2967 clinching his re-election